Highly Segmented Thermal Barrier Coatings Deposited by Suspension Plasma Spray: Effects of Spray Process on Microstructure

NASA Astrophysics Data System (ADS)

Chen, Xiaolong; Honda, Hiroshi; Kuroda, Seiji; Araki, Hiroshi; Murakami, Hideyuki; Watanabe, Makoto; Sakka, Yoshio

2016-12-01

Effects of the ceramic powder size used for suspension as well as several processing parameters in suspension plasma spraying of YSZ were investigated experimentally, aiming to fabricate highly segmented microstructures for thermal barrier coating (TBC) applications. Particle image velocimetry (PIV) was used to observe the atomization process and the velocity distribution of atomized droplets and ceramic particles travelling toward the substrates. The tested parameters included the secondary plasma gas (He versus H2), suspension injection flow rate, and substrate surface roughness. Results indicated that a plasma jet with a relatively higher content of He or H2 as the secondary plasma gas was critical to produce highly segmented YSZ TBCs with a crack density up to 12 cracks/mm. The optimized suspension flow rate played an important role to realize coatings with a reduced porosity level and improved adhesion. An increased powder size and higher operation power level were beneficial for the formation of highly segmented coatings onto substrates with a wider range of surface roughness.

Automated segmentation of the lamina cribrosa using Frangi's filter: a novel approach for rapid identification of tissue volume fraction and beam orientation in a trabeculated structure in the eye

PubMed Central

Campbell, Ian C.; Coudrillier, Baptiste; Mensah, Johanne; Abel, Richard L.; Ethier, C. Ross

2015-01-01

The lamina cribrosa (LC) is a tissue in the posterior eye with a complex trabecular microstructure. This tissue is of great research interest, as it is likely the initial site of retinal ganglion cell axonal damage in glaucoma. Unfortunately, the LC is difficult to access experimentally, and thus imaging techniques in tandem with image processing have emerged as powerful tools to study the microstructure and biomechanics of this tissue. Here, we present a staining approach to enhance the contrast of the microstructure in micro-computed tomography (micro-CT) imaging as well as a comparison between tissues imaged with micro-CT and second harmonic generation (SHG) microscopy. We then apply a modified version of Frangi's vesselness filter to automatically segment the connective tissue beams of the LC and determine the orientation of each beam. This approach successfully segmented the beams of a porcine optic nerve head from micro-CT in three dimensions and SHG microscopy in two dimensions. As an application of this filter, we present finite-element modelling of the posterior eye that suggests that connective tissue volume fraction is the major driving factor of LC biomechanics. We conclude that segmentation with Frangi's filter is a powerful tool for future image-driven studies of LC biomechanics. PMID:25589572

SELECTED PAPERS FROM PROFESSIONAL PROGRAM SEGMENTS OF UNITED CEREBRAL PALSY'S ANNUAL CONFERENCE (15TH, LOS ANGELES, CALIFORNIA, MARCH 11-13, 1965).

ERIC Educational Resources Information Center

United Cerebral Palsy Association, New York, NY.

THIS PUBLICATION PRESENTS SELECTED PAPERS FROM THE UNITED CEREBRAL PALSY ASSOCIATION'S 15TH ANNUAL CONFERENCE, MARCH 13, 1965. PAPERS ARE--(1) "S IS TO TURN" BY PAUL V. CARLSON, (2) "CERTAIN ASPECTS OF THE FUNCTIONAL STATUS OF THE FETUS IN UTERO" BY FORREST H. ADAMS, (3) "ENCEPHALITIS--COMMON CAUSES AND AFTER EFFECTS"…

Geometry segmentation of voxelized representations of heterogeneous microstructures using betweenness centrality

DOE Office of Scientific and Technical Information (OSTI.GOV)

Yuan, Rui; Singh, Sudhanshu S.; Chawla, Nikhilesh

2016-08-15

We present a robust method for automating removal of “segregation artifacts” in segmented tomographic images of three-dimensional heterogeneous microstructures. The objective of this method is to accurately identify and separate discrete features in composite materials where limitations in imaging resolution lead to spurious connections near close contacts. The method utilizes betweenness centrality, a measure of the importance of a node in the connectivity of a graph network, to identify voxels that create artificial bridges between otherwise distinct geometric features. To facilitate automation of the algorithm, we develop a relative centrality metric to allow for the selection of a threshold criterionmore » that is not sensitive to inclusion size or shape. As a demonstration of the effectiveness of the algorithm, we report on the segmentation of a 3D reconstruction of a SiC particle reinforced aluminum alloy, imaged by X-ray synchrotron tomography.« less

Five-order SRSs and supercontinuum generation from a tapered tellurite microstructured fiber with longitudinally varying dispersion.

PubMed

Liao, Meisong; Yan, Xin; Gao, Weiqing; Duan, Zhongchao; Qin, Guanshi; Suzuki, Takenobu; Ohishi, Yasutake

2011-08-01

We try to obtain stable supercontinuum (SC) generation with broad bandwidth under relative simple pump conditions. We use a 1.3-m-long highly nonlinear tellurite microstructured fiber and pump it by a 15 ps 1064 nm fiber laser. One segment of the fiber is tapered from a core diameter of 3.4 μm to 1.3 μm. For the first time five-order stimulated Raman scatterings (SRSs) are observed for soft glass fibers. SC covering 730-1700 nm is demonstrated with the pump-pulse-energy of several nJ. The mechanisms of SC broadening are mainly SRS, self-phase modulation (SPM) and cross phase modulation (XPM). The tapered segment has two advantages. Firstly it increases the nonlinearity of fiber by several times. Secondly, it acts as a compensation for the dispersion of the untapered segment, and mitigates the walk-off between pump pulse and SRS peaks.

A low-drift, low-noise, multichannel dc voltage source for segmented-electrode Paul traps

NASA Astrophysics Data System (ADS)

Beev, Nikolai; Fenske, Julia-Aileen; Hannig, Stephan; Schmidt, Piet O.

2017-05-01

We present the design, construction, and characterization of a multichannel, low-drift, low-noise dc voltage source specially designed for biasing the electrodes of segmented linear Paul traps. The system produces 20 output voltage pairs having a common-mode range of 0 to +120 V with 3.7 mV/LSB (least significant bit) resolution and differential ranges of ±5 V with 150 μV/LSB or ±16 V with 610 μV/LSB resolution. All common-mode and differential voltages are independently controllable, and all pairs share the same ground reference. The measured drift of the voltages after warm-up is lower than 1 LSB peak-to-peak on the time scale of 2 h. The noise of an output voltage measured with respect to ground is <10 μVRMS within 10 Hz-100 kHz, with spectral density lower than 3 nV Hz-1/2 above 50 kHz. The performance of the system is limited by the external commercial multichannel DAC unit NI 9264, and in principle, it is possible to achieve higher stability and lower noise with the same voltage ranges. The system has a compact, modular, and scalable architecture, having all parts except for the DAC chassis housed within a single 19″ 3HE rack.

Processing, Microstructure, and Tensile Properties of the Ti-6Al-4V-1.55B Eutectic Alloy (Preprint)

DTIC Science & Technology

2007-02-01

compositions via induction skull melting using a water-cooled segmented copper crucible . The charge was incrementally added to give chemical homogeneity...achieved near the water-cooled wall of the segmented copper crucible . The regular eutectic arrangement was destroyed and an irregular distribution of fine

Particular Oceanic Core Complex evolution in an extremely low melt supply environment

NASA Astrophysics Data System (ADS)

Maia, M.; Vincent, C.; Briais, A.; Brunelli, D.; Ligi, M.; Adrião, Á.; Sichel, S. E.

2017-12-01

Saint Paul is a major transform system in the Equatorial Mid-Atlantic Ridge. It consists of four transform faults and three short intra-transform ridge segments. This study focuses on peridotitic and gabbroic ridges and unusual Oceanic Core Complex (OCC)-related tectonics found at the St. Paul southern intra-transform segment. These structures display the same characters as the OCCs worldwide (termination, rafted blocks, corrugations, breakaway); however unusual features suggest that they have evolved in a particular way with respect to other OCCs along the Mid-Atlantic Ridge. Small ridge segments display an asymmetrical accretion through successive nucleations of detachment faults over more than 10 m.y. marked by crustal mylonitisation (Adrião et al., this session). Structural mapping and gravity models covering about 100 km on each ridge flank confirm the existence of four consecutive detachments, the more recent being still active, and provide an interpretative model of their spatiotemporal evolution. The unusual aspect is that each detachment appears to have been split on the two sides of the ridge axis. As a consequence, the breakaways are located on the American plate, while the conjugate terminations are drafted away on the African plate. We suggest that this unusual feature results from the rupture of the detachment surfaces by relocation of the ridge axis through westward small ridge jumps. This mode of expansion is somehow intermediate between the "normal" OCCs spreading and the Smooth Seafloor-type model described off-axis along the Southwest Indian Ridge (Sauter et al., 2013). It partly compensates the long-term asymmetric expansion of this ridge segment and is likely related to the extremely low melt supply and thick lithosphere inferred from other studies. Adrião et al., 2017. Mechanical mixing and metamorphism of mafic and ultramafic lithologies .... This Session Sauter et al., 2013. Continuous exhumation of mantle-derived rocks… Nat Geo, 2013

Microstructure and Mechanical Properties of Long Ti-6Al-4V Rods Additively Manufactured by Selective Electron Beam Melting Out of a Deep Powder Bed and the Effect of Subsequent Hot Isostatic Pressing

NASA Astrophysics Data System (ADS)

Lu, S. L.; Tang, H. P.; Ning, Y. P.; Liu, N.; StJohn, D. H.; Qian, M.

2015-09-01

An array of eight long Ti-6Al-4V rods (diameter: 12 mm; height: 300 mm) have been additively manufactured, vertically and perpendicular to the powder bed, by selective electron beam melting (SEBM). The purpose was to identify and understand the challenges of fabricating Ti-6Al-4V samples or parts from a deep powder bed (more than 200-mm deep) by SEBM and the necessity of applying post heat treatment. The resulting microstructure and mechanical properties of these Ti-6Al-4V rods were characterized along their building ( i.e., axial) direction by dividing each rod into three segments (top, middle, and bottom), both before ( i.e., as-built) and after hot isostatic pressing (HIP). The as-built microstructure of each rod was inhomogeneous; it was coarsest in the top segment, which showed a near equilibrium α- β lamellar structure, and finest in the bottom segment, which featured a non-equilibrium mixed structure. The tensile properties varied along the rod axis, especially the ductility, but all tensile properties met the requirements specified by ASTM F3001-14. HIP increased the relative density from 99.03 pct of the theoretical density (TD) to 99.90 pct TD and homogenized the microstructure thereby leading to highly consistent tensile properties along the rod axis. The temperature of the stainless steel substrate used in the powder bed was monitored. The as-built inhomogeneous microstructure is attributed to the temperature gradient in the deep powder bed. Post heat treatment is thus necessary for Ti-6Al-4V samples or parts manufactured from a deep powder bed by SEBM. This differs from the additive manufacturing of small samples or parts from a shallow powder bed (less than 100-mm deep) by SEBM.

Soliton self-frequency shift and third-harmonic generation in a four-hole As₂S₅ microstructured optical fiber.

PubMed

Cheng, Tonglei; Usaki, Ryo; Duan, Zhongchao; Gao, Weiqing; Deng, Dinghuan; Liao, Meisong; Kanou, Yasuhire; Matsumoto, Morio; Misumi, Takashi; Suzuki, Takenobu; Ohishi, Yasutake

2014-02-24

Soliton self-frequency shift (SSFS) and third-harmonic generation (THG) are observed in a four-hole As2S5 chalcogenide microstructured optical fiber (MOF). The As2S5 MOF is tapered to offer an ideal environment for SSFS. After tapering, the zero-dispersion wavelength (ZDW) shifts from 2.02 to 1.61 μm, and the rate of SSFS can be enhanced by increasing the energy density of the pulse. By varying the average input power from 220 to 340 mW, SSFS of a soliton central wavelength from 2.206 to 2.600 μm in the mid-infrared is observed in the tapered segment, and THG at 632 nm is observed in the untapered segment.

Dynamics and control of fast ion crystal splitting in segmented Paul traps (Open Access, Publisher’s Version)

DTIC Science & Technology

2014-07-09

operations, in addition to laser - or microwave-driven logic gates. Essential shuttling operations are splitting and merging of linear ion crystals. It is...from stray charges, laser induced charging of the trap [19], trap geometry imperfections or residual ponderomotive forces along the trap axis. The...transfer expressed as the mean phonon number Δ ω¯ = n E / f . We distinguish several regimes of laser –ion interaction: (i) if the vibrational

STS-113 Post Flight Presentation

NASA Astrophysics Data System (ADS)

2002-01-01

The STS-113 post-flight presentation begins with a view of Mission Specialists Michael E. Lopez-Alegria and John B. Herrington getting suited for the space mission. The STS-113 crew consists of: Commander James D. Wetherbee, Pilot Paul Lockhart, Mission Specialists Michael Lopez-Alegria and John Herrington. Cosmonauts Valery Korzun, and Sergei Treschev, and astronaut Peggy Whitson who are all members of the expedition five crew, and Commander Kenneth Bowersox, Flight Engineers Nikolai Budarin and Donald Pettit, members of Expedition Six. The main goal of this mission is to take Expedition Six up to the International Space Station and Return Expedition Five to the Earth. The second objective is to install the P(1) Truss segment. Three hours prior to launch, the crew of Expedition Six along with James Wetherbee, Paul Lockhart, Michael Lopez-Alegria and John Herrington are shown walking to an astrovan, which takes them to the launch pad. The actual liftoff is presented. Three Extravehicular Activities (EVA)'s are performed on this mission. Michael Lopez-Alegria and John Herrington are shown performing EVA 1 and EVA 2 which include making connections between the P1 and S(0) Truss segments, and installing fluid jumpers. A panoramic view of the ISS with the Earth in the background is shown. The grand ceremony of the crew exchange is presented. The astronauts performing everyday duties such as brushing teeth, washing hair, sleeping, and eating pistachio nuts are shown. The actual landing of the Space Shuttle is presented.

Multifocal nerve lesions and LZTR1 germline mutations in segmental schwannomatosis.

PubMed

Farschtschi, Said; Mautner, Victor-Felix; Pham, Mirko; Nguyen, Rosa; Kehrer-Sawatzki, Hildegard; Hutter, Sonja; Friedrich, Reinhard E; Schulz, Alexander; Morrison, Helen; Jones, David T W; Bendszus, Martin; Bäumer, Philipp

2016-10-01

Schwannomatosis is a genetic disorder characterized by the occurrence of multiple peripheral schwannomas. Segmental schwannomatosis is diagnosed when schwannomas are restricted to 1 extremity and is thought to be caused by genetic mosaicism. We studied 5 patients with segmental schwannomatosis through microstructural magnetic resonance neurography and mutation analysis of NF2, SMARCB1, and LZTR1. In 4 of 5 patients, subtle fascicular nerve lesions were detected in clinically unaffected extremities. Two patients exhibited LZTR1 germline mutations. This appears contrary to a simple concept of genetic mosaicism and suggests more complex and heterogeneous mechanisms underlying the phenotype of segmental schwannomatosis than previously thought. Ann Neurol 2016;80:625-628. © 2016 American Neurological Association.

Three-Dimensional Imaging and Numerical Reconstruction of Graphite/Epoxy Composite Microstructure Based on Ultra-High Resolution X-Ray Computed Tomography

NASA Technical Reports Server (NTRS)

Czabaj, M. W.; Riccio, M. L.; Whitacre, W. W.

2014-01-01

A combined experimental and computational study aimed at high-resolution 3D imaging, visualization, and numerical reconstruction of fiber-reinforced polymer microstructures at the fiber length scale is presented. To this end, a sample of graphite/epoxy composite was imaged at sub-micron resolution using a 3D X-ray computed tomography microscope. Next, a novel segmentation algorithm was developed, based on concepts adopted from computer vision and multi-target tracking, to detect and estimate, with high accuracy, the position of individual fibers in a volume of the imaged composite. In the current implementation, the segmentation algorithm was based on Global Nearest Neighbor data-association architecture, a Kalman filter estimator, and several novel algorithms for virtualfiber stitching, smoothing, and overlap removal. The segmentation algorithm was used on a sub-volume of the imaged composite, detecting 508 individual fibers. The segmentation data were qualitatively compared to the tomographic data, demonstrating high accuracy of the numerical reconstruction. Moreover, the data were used to quantify a) the relative distribution of individual-fiber cross sections within the imaged sub-volume, and b) the local fiber misorientation relative to the global fiber axis. Finally, the segmentation data were converted using commercially available finite element (FE) software to generate a detailed FE mesh of the composite volume. The methodology described herein demonstrates the feasibility of realizing an FE-based, virtual-testing framework for graphite/fiber composites at the constituent level.

Simulation of FIB-SEM images for analysis of porous microstructures.

PubMed

Prill, Torben; Schladitz, Katja

2013-01-01

Focused ion beam nanotomography-scanning electron microscopy tomography yields high-quality three-dimensional images of materials microstructures at the nanometer scale combining serial sectioning using a focused ion beam with SEM. However, FIB-SEM tomography of highly porous media leads to shine-through artifacts preventing automatic segmentation of the solid component. We simulate the SEM process in order to generate synthetic FIB-SEM image data for developing and validating segmentation methods. Monte-Carlo techniques yield accurate results, but are too slow for the simulation of FIB-SEM tomography requiring hundreds of SEM images for one dataset alone. Nevertheless, a quasi-analytic description of the specimen and various acceleration techniques, including a track compression algorithm and an acceleration for the simulation of secondary electrons, cut down the computing time by orders of magnitude, allowing for the first time to simulate FIB-SEM tomography. © Wiley Periodicals, Inc.

Seafloor spreading on the Amsterdam-St. Paul hotspot plateau

NASA Astrophysics Data System (ADS)

Conder, James A.; Scheirer, Daniel S.; Forsyth, Donald W.

2000-04-01

The Amsterdam-St. Paul (ASP) platform on the intermediate rate Southeast Indian Ridge (SEIR) is the only oceanic hotspot plateau outside the Atlantic Ocean containing an active, mid-ocean ridge spreading axis. Because the ASP hotspot is small and remotely located, it has been relatively unstudied, and the ridge axis location in many places near the ASP plateau was previously unknown or ambiguous. We mapped the SEIR out to 1 Ma crust (Jaramillo anomaly) both on and near the ASP platform. We located the spreading center to within a few kilometers, based on side-scan sonar reflectivity. Recent off-platform magnetic anomalies and lineated abyssal hill topography are consistent with a simple spreading history. Off-platform full spreading rates increase from ˜63 km/Myr on segment H to the north of the platform to ˜65.5 km/Myr on segment K to the south. In contrast, inversions of seafloor magnetization based on uniform and variable thickness magnetic source layers reflect a complex on-platform tectonic history with ridge jumps, off-axis volcanism, and propagating rifts. On one section of the ASP plateau the spreading location has stabilized and is beginning to rift the plateau apart, generating symmetric magnetic anomalies and lineated topography for the last several hundred thousand years. The larger, more stable, spreading segments of the ASP platform are aligned with major volcanic edifices, suggesting that along-axis magma flow away from plume-fed centers is an important influence on spreading geometry. Many complex tectonic features observed on the ASP plateau, such as ridge jumps, en echelon, oblique spreading centers, and transforms oblique to the spreading direction, are comparable to features observed on Iceland. The similarities suggest that moderate crustal thickening at an intermediate rate spreading center may have similar effects to pronounced thickening at a slow rate spreading center.

Correlation between spectral-domain OCT findings and visual acuity in X-linked retinoschisis.

PubMed

Yang, Hyun Seung; Lee, Jung Bok; Yoon, Young Hee; Lee, Joo Yong

2014-05-08

To investigate the tomographic characteristics of the outer retina and choroid and their relationship with visual acuity in X-linked juvenile retinoschisis (XLRS) patients using spectral-domain optical coherence tomography (SD-OCT). In this retrospective, observational, case-control study, we analyzed 20 eyes of 10 patients with XLRS using SD-OCT. The clinical and tomographic features of the outer retina, including the external limiting membrane (ELM), inner segment/outer segment (IS/OS) junction, cone cell outer segment tips (COST) line, photoreceptor outer segment (PROS) length, and choroid, were evaluated. As controls, 40 age-, sex-, and refraction-matched healthy eyes (1:2 matched) were randomly selected and imaged in parallel. The most prevalent area of abnormality in the outer retina layer of our patients was the outer plexiform layer (OPL; 60% of all affected eyes) and COST line (75% of all affected eyes). On average, the subfoveal choroid and PROS lengths were 35 μm thicker and 19 μm thinner, respectively, in XLRS patients (P = 0.084 and P < 0.001, respectively). A dominant IS/OS junction, COST line defects, and PROS length were related to patient best-corrected visual acuity (BCVA; P = 0.029, P = 0.001, and P < 0.001, respectively) by univariate analysis. Cone cell outer segment tips line defect and PROS length were the only factors related to BCVA in multivariate analysis (P = 0.028 and 0.003, respectively). Outer plexiform layer and photoreceptor microstructure defects are frequent in XLRS patients. Cone cell outer segment tips line defects and shortened PROS lengths as well as other photoreceptor microstructure defects may be closely related to poor vision in XLRS.

Advanced Steel Microstructural Classification by Deep Learning Methods.

PubMed

Azimi, Seyed Majid; Britz, Dominik; Engstler, Michael; Fritz, Mario; Mücklich, Frank

2018-02-01

The inner structure of a material is called microstructure. It stores the genesis of a material and determines all its physical and chemical properties. While microstructural characterization is widely spread and well known, the microstructural classification is mostly done manually by human experts, which gives rise to uncertainties due to subjectivity. Since the microstructure could be a combination of different phases or constituents with complex substructures its automatic classification is very challenging and only a few prior studies exist. Prior works focused on designed and engineered features by experts and classified microstructures separately from the feature extraction step. Recently, Deep Learning methods have shown strong performance in vision applications by learning the features from data together with the classification step. In this work, we propose a Deep Learning method for microstructural classification in the examples of certain microstructural constituents of low carbon steel. This novel method employs pixel-wise segmentation via Fully Convolutional Neural Network (FCNN) accompanied by a max-voting scheme. Our system achieves 93.94% classification accuracy, drastically outperforming the state-of-the-art method of 48.89% accuracy. Beyond the strong performance of our method, this line of research offers a more robust and first of all objective way for the difficult task of steel quality appreciation.

Robust segmentation of trabecular bone for in vivo CT imaging using anisotropic diffusion and multi-scale morphological reconstruction

NASA Astrophysics Data System (ADS)

Chen, Cheng; Jin, Dakai; Zhang, Xiaoliu; Levy, Steven M.; Saha, Punam K.

2017-03-01

Osteoporosis is associated with an increased risk of low-trauma fractures. Segmentation of trabecular bone (TB) is essential to assess TB microstructure, which is a key determinant of bone strength and fracture risk. Here, we present a new method for TB segmentation for in vivo CT imaging. The method uses Hessian matrix-guided anisotropic diffusion to improve local separability of trabecular structures, followed by a new multi-scale morphological reconstruction algorithm for TB segmentation. High sensitivity (0.93), specificity (0.93), and accuracy (0.92) were observed for the new method based on regional manual thresholding on in vivo CT images. Mechanical tests have shown that TB segmentation using the new method improved the ability of derived TB spacing measure for predicting actual bone strength (R2=0.83).

STS-113 crew during M-113 armored personnel carrier training

NASA Technical Reports Server (NTRS)

2002-01-01

KENNEDY SPACE CENTER, FLA. -- The STS-113 crew pause for a photo after test drives in the M-113 armored personnel carrier behind them. From left are Mission Specialist Michael Lopez-Alegria, Pilot Paul Lockhart, Commander James Wetherbee and Mission Specialist John Herrington. Driving the M-113 is part of emergency egress training at the pad, one of the Terminal Countdown Demonstration Test activities in preparation for launch. The TCDT also includes a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

STS-113 crew during M-113 armored personnel carrier training

NASA Technical Reports Server (NTRS)

2002-01-01

KENNEDY SPACE CENTER, FLA. -- STS-113 Pilot Paul Lockhart test drives an M-113 armored personnel carrier, part of emergency egress training during Terminal Countdown Demonstration Test activities. He is accompanied by several other crew members, seen at left, Mission Specialist Michael Lopez-Alegria and Commander James Wetherbee. The crew is preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

STS-113 crew during M-113 armored personnel carrier training

NASA Technical Reports Server (NTRS)

2002-01-01

KENNEDY SPACE CENTER, FLA. -- STS-113 Pilot Paul Lockhart stands inside an M-113 armored personnel carrier he is about to drive, part of emergency egress training during Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KSC-02pd1554

NASA Image and Video Library

2002-10-16

KENNEDY SPACE CENTER, FLA. -- The STS-113 crew pause for a photo after test drives in the M-113 armored personnel carrier behind them. From left are Mission Specialist Michael Lopez-Alegria, Pilot Paul Lockhart, Commander James Wetherbee and Mission Specialist John Herrington. Driving the M-113 is part of emergency egress training at the pad, one of the Terminal Countdown Demonstration Test activities in preparation for launch. The TCDT also includes a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

Cyclic Deformation Microstructure in Heavily Cold-Drawn Austenitic Stainless Steel

NASA Astrophysics Data System (ADS)

Xie, Xingfei; Ning, Dong; Sun, Jian

2018-04-01

Cyclic deformation microstructure of the heavily cold-drawn austenitic stainless steel is significantly influenced by the spacing between mechanical twins introduced by prior cold drawing. Well-developed dislocation cells form between mechanical twins with the spacing larger than about 800 nm. Persistent slip band (PSB)-like structure with ladders takes place between mechanical twins spacing from 300 to 800 nm. Few dislocations occur between neighboring mechanical twins with spacing less than about 100 nm. Pre-existing mechanical twins and deformation bands segment austenitic grains, facilitating multi-slip and consequently suppressing PSB formation.

Cyclic Deformation Microstructure in Heavily Cold-Drawn Austenitic Stainless Steel

NASA Astrophysics Data System (ADS)

Xie, Xingfei; Ning, Dong; Sun, Jian

2018-07-01

Cyclic deformation microstructure of the heavily cold-drawn austenitic stainless steel is significantly influenced by the spacing between mechanical twins introduced by prior cold drawing. Well-developed dislocation cells form between mechanical twins with the spacing larger than about 800 nm. Persistent slip band (PSB)-like structure with ladders takes place between mechanical twins spacing from 300 to 800 nm. Few dislocations occur between neighboring mechanical twins with spacing less than about 100 nm. Pre-existing mechanical twins and deformation bands segment austenitic grains, facilitating multi-slip and consequently suppressing PSB formation.

Correlated patterns in hydrothermal plume distribution and apparent magmatic budget along 2500 km of the Southeast Indian Ridge

USGS Publications Warehouse

Baker, Edward; Christophe Hémond,; Anne Briais,; Marcia Maia,; Scheirer, Daniel S.; Sharon L. Walker,; Tingting Wang,; Yongshun John Chen,

2014-01-01

Multiple geological processes affect the distribution of hydrothermal venting along a mid-ocean ridge. Deciphering the role of a specific process is often frustrated by simultaneous changes in other influences. Here we take advantage of the almost constant spreading rate (65–71 mm/yr) along 2500 km of the Southeast Indian Ridge (SEIR) between 77°E and 99°E to examine the spatial density of hydrothermal venting relative to regional and segment-scale changes in the apparent magmatic budget. We use 227 vertical profiles of light backscatter and (on 41 profiles) oxidation-reduction potential along 27 first and second-order ridge segments on and adjacent to the Amsterdam-St. Paul (ASP) Plateau to map ph, the fraction of casts detecting a plume. At the regional scale, venting on the five segments crossing the magma-thickened hot spot plateau is almost entirely suppressed (ph = 0.02). Conversely, the combined ph (0.34) from all other segments follows the global trend of ph versus spreading rate. Off the ASP Plateau, multisegment trends in ph track trends in the regional axial depth, high where regional depth increases and low where it decreases. At the individual segment scale, a robust correlation between ph and cross-axis inflation for first-order segments shows that different magmatic budgets among first-order segments are expressed as different levels of hydrothermal spatial density. This correlation is absent among second-order segments. Eighty-five percent of the plumes occur in eight clusters totaling ∼350 km. We hypothesize that these clusters are a minimum estimate of the length of axial melt lenses underlying this section of the SEIR.

Correlated patterns in hydrothermal plume distribution and apparent magmatic budget along 2500 km of the Southeast Indian Ridge

NASA Astrophysics Data System (ADS)

Baker, Edward T.; Hémond, Christophe; Briais, Anne; Maia, Marcia; Scheirer, Daniel S.; Walker, Sharon L.; Wang, Tingting; Chen, Yongshun John

2014-08-01

Multiple geological processes affect the distribution of hydrothermal venting along a mid-ocean ridge. Deciphering the role of a specific process is often frustrated by simultaneous changes in other influences. Here we take advantage of the almost constant spreading rate (65-71 mm/yr) along 2500 km of the Southeast Indian Ridge (SEIR) between 77°E and 99°E to examine the spatial density of hydrothermal venting relative to regional and segment-scale changes in the apparent magmatic budget. We use 227 vertical profiles of light backscatter and (on 41 profiles) oxidation-reduction potential along 27 first and second-order ridge segments on and adjacent to the Amsterdam-St. Paul (ASP) Plateau to map ph, the fraction of casts detecting a plume. At the regional scale, venting on the five segments crossing the magma-thickened hot spot plateau is almost entirely suppressed (ph = 0.02). Conversely, the combined ph (0.34) from all other segments follows the global trend of ph versus spreading rate. Off the ASP Plateau, multisegment trends in ph track trends in the regional axial depth, high where regional depth increases and low where it decreases. At the individual segment scale, a robust correlation between ph and cross-axis inflation for first-order segments shows that different magmatic budgets among first-order segments are expressed as different levels of hydrothermal spatial density. This correlation is absent among second-order segments. Eighty-five percent of the plumes occur in eight clusters totaling ˜350 km. We hypothesize that these clusters are a minimum estimate of the length of axial melt lenses underlying this section of the SEIR.

Reconstruction of three-dimensional grain structure in polycrystalline iron via an interactive segmentation method

NASA Astrophysics Data System (ADS)

Feng, Min-nan; Wang, Yu-cong; Wang, Hao; Liu, Guo-quan; Xue, Wei-hua

2017-03-01

Using a total of 297 segmented sections, we reconstructed the three-dimensional (3D) structure of pure iron and obtained the largest dataset of 16254 3D complete grains reported to date. The mean values of equivalent sphere radius and face number of pure iron were observed to be consistent with those of Monte Carlo simulated grains, phase-field simulated grains, Ti-alloy grains, and Ni-based super alloy grains. In this work, by finding a balance between automatic methods and manual refinement, we developed an interactive segmentation method to segment serial sections accurately in the reconstruction of the 3D microstructure; this approach can save time as well as substantially eliminate errors. The segmentation process comprises four operations: image preprocessing, breakpoint detection based on mathematical morphology analysis, optimized automatic connection of the breakpoints, and manual refinement by artificial evaluation.

Algorithmic structural segmentation of defective particle systems: a lithium-ion battery study.

PubMed

Westhoff, D; Finegan, D P; Shearing, P R; Schmidt, V

2018-04-01

We describe a segmentation algorithm that is able to identify defects (cracks, holes and breakages) in particle systems. This information is used to segment image data into individual particles, where each particle and its defects are identified accordingly. We apply the method to particle systems that appear in Li-ion battery electrodes. First, the algorithm is validated using simulated data from a stochastic 3D microstructure model, where we have full information about defects. This allows us to quantify the accuracy of the segmentation result. Then we show that the algorithm can successfully be applied to tomographic image data from real battery anodes and cathodes, which are composed of particle systems with very different morpohological properties. Finally, we show how the results of the segmentation algorithm can be used for structural analysis. © 2017 The Authors Journal of Microscopy © 2017 Royal Microscopical Society.

Application of morphological synthesis for understanding electrode microstructure evolution as a function of applied charge/discharge cycles

DOE PAGES

Glazoff, Michael V.; Dufek, Eric J.; Shalashnikov, Egor V.

2016-09-15

Morphological analysis and synthesis operations were employed for analysis of electrode microstructure transformations and evolution accompanying the application of charge/discharge cycles to electrochemical storage systems (batteries). Using state-of-the-art morphological algorithms, it was possible to predict microstructure evolution in porous Si electrodes for Li-ion batteries with sufficient accuracy. Algorithms for image analyses (segmentation, feature extraction, and 3D-reconstructions using 2D-images) were also developed. Altogether, these techniques could be considered supplementary to phase-field mesoscopic approach to microstructure evolution that is based upon clear and definitive changes in the appearance of microstructure. However, unlike in phase-field, the governing equations for morphological approach are geometry-,more » not physics-based. Similar non-physics based approach to understanding different phenomena was attempted with the introduction of cellular automata. It is anticipated that morphological synthesis and analysis will represent a useful supplementary tool to phase-field and will render assistance to unraveling the underlying microstructure-property relationships. The paper contains data on electrochemical characterization of different electrode materials that was conducted in parallel to morphological study.« less

Analyses of microstructural and elastic properties of porous SOFC cathodes based on focused ion beam tomography

NASA Astrophysics Data System (ADS)

Chen, Zhangwei; Wang, Xin; Giuliani, Finn; Atkinson, Alan

2015-01-01

Mechanical properties of porous SOFC electrodes are largely determined by their microstructures. Measurements of the elastic properties and microstructural parameters can be achieved by modelling of the digitally reconstructed 3D volumes based on the real electrode microstructures. However, the reliability of such measurements is greatly dependent on the processing of raw images acquired for reconstruction. In this work, the actual microstructures of La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathodes sintered at an elevated temperature were reconstructed based on dual-beam FIB/SEM tomography. Key microstructural and elastic parameters were estimated and correlated. Analyses of their sensitivity to the grayscale threshold value applied in the image segmentation were performed. The important microstructural parameters included porosity, tortuosity, specific surface area, particle and pore size distributions, and inter-particle neck size distribution, which may have varying extent of effect on the elastic properties simulated from the microstructures using FEM. Results showed that different threshold value range would result in different degree of sensitivity for a specific parameter. The estimated porosity and tortuosity were more sensitive than surface area to volume ratio. Pore and neck size were found to be less sensitive than particle size. Results also showed that the modulus was essentially sensitive to the porosity which was largely controlled by the threshold value.

Reconstructing the microstructure of polyimide-silicalite mixed-matrix membranes and their particle connectivity using FIB-SEM tomography.

PubMed

Diblíková, P; Veselý, M; Sysel, P; Čapek, P

2018-03-01

Properties of a composite material made of a continuous matrix and particles often depend on microscopic details, such as contacts between particles. Focusing on processing raw focused-ion beam scanning electron microscope (FIB-SEM) tomography data, we reconstructed three mixed-matrix membrane samples made of 6FDA-ODA polyimide and silicalite-1 particles. In the first step of image processing, backscattered electron (BSE) and secondary electron (SE) signals were mixed in a ratio that was expected to obtain a segmented 3D image with a realistic volume fraction of silicalite-1. Second, after spatial alignment of the stacked FIB-SEM data, the 3D image was smoothed using adaptive median and anisotropic nonlinear diffusion filters. Third, the image was segmented using the power watershed method coupled with a seeding algorithm based on geodesic reconstruction from the markers. If the resulting volume fraction did not match the target value quantified by chemical analysis of the sample, the BSE and SE signals were mixed in another ratio and the procedure was repeated until the target volume fraction was achieved. Otherwise, the segmented 3D image (replica) was accepted and its microstructure was thoroughly characterized with special attention paid to connectivity of the silicalite phase. In terms of the phase connectivity, Monte Carlo simulations based on the pure-phase permeability values enabled us to calculate the effective permeability tensor, the main diagonal elements of which were compared with the experimental permeability. In line with the hypothesis proposed in our recent paper (Čapek, P. et al. (2014) Comput. Mater. Sci. 89, 142-156), the results confirmed that the existence of particle clusters was a key microstructural feature determining effective permeability. © 2017 The Authors Journal of Microscopy © 2017 Royal Microscopical Society.

Proposed Advance Measures Flood Control Project Hampton Township, Bay County, Michigan. Intensive Archaeological Survey. Volume 1,

DTIC Science & Technology

1987-08-01

S _6RIDGE 559ROAD S99 * Radio ToW~ a (W BC ------ ed itnpiton01. UI PEN ’- EE- .ALn7 I 31 tt ,5 (’I b h a"" ,,.... .- O.CORRIDOR SEGMENT 3 , ,17.- 1A...followed in 1857. Gerardus Vennix and Henry Rooiskers, Hollan- ders, came in 1858 along with Louis Gullette of Mt. Clemens , Michigan, Patrick Bergen...quality chert or agate. Type identity is unknown to Mr. Neering. The cache was found by Paul Schmidt , another local HAS member. Mr. Neering advises me

The Impact of Manual Segmentation of CT Images on Monte Carlo Based Skeletal Dosimetry

NASA Astrophysics Data System (ADS)

Frederick, Steve; Jokisch, Derek; Bolch, Wesley; Shah, Amish; Brindle, Jim; Patton, Phillip; Wyler, J. S.

2004-11-01

Radiation doses to the skeleton from internal emitters are of importance in both protection of radiation workers and patients undergoing radionuclide therapies. Improved dose estimates involve obtaining two sets of medical images. The first image provides the macroscopic boundaries (spongiosa volume and cortical shell) of the individual skeletal sites. A second, higher resolution image of the spongiosa microstructure is also obtained. These image sets then provide the geometry for a Monte Carlo radiation transport code. Manual segmentation of the first image is required in order to provide the macrostructural data. For this study, multiple segmentations of the same CT image were performed by multiple individuals. The segmentations were then used in the transport code and the results compared in order to determine the impact of differing segmentations on the skeletal doses. This work has provided guidance on the extent of training required of the manual segmenters. (This work was supported by a grant from the National Institute of Health.)

The Influence of Process Equipment on the Properties of Suspension Plasma Sprayed Yttria-Stabilized Zirconia Coatings

NASA Astrophysics Data System (ADS)

Marr, Michael; Waldbillig, David; Kesler, Olivera

2013-03-01

Suspension plasma-sprayed YSZ coatings were deposited at lab-scale and production-type facilities to investigate the effect of process equipment on coating properties. The target application for these coatings is solid oxide fuel cell (SOFC) electrolytes; hence, dense microstructures with low permeability values were preferred. Both facilities had the same torch but different suspension feeding systems, torch robots, and substrate holders. The lab-scale facility had higher torch-substrate relative speeds compared with the production-type facility. On porous stainless steel substrates, permeabilities and microstructures were comparable for coatings from both facilities, and no segmentation cracks were observed. Coating permeability was further reduced by increasing substrate temperatures during deposition or reducing suspension feed rates. On SOFC cathode substrates, coatings made in the production-type facility had higher permeabilities and more segmentation cracks compared with coatings made in the lab-scale facility. Increased cracking in coatings from the production-type facility was likely caused mainly by its lower torch-substrate relative speed.

Effects of the types of overlap on the mechanical properties of FSSW welded AZ series magnesium alloy joints

NASA Astrophysics Data System (ADS)

Wang, Dan; Shen, Jun; Wang, Lin-Zhi

2012-03-01

The effects of the types of overlap on the mechanical properties of the friction stir spot welding (FSSW) welded AZ series magnesium alloy joints were investigated by microstructural observations, microhardness tests, and tensile tests. The results show that the microstructure of the stir zone adjacent to the periphery of the rotating pin is mainly composed of the upper sheet. The average distance D between the longitudinal segment of the curved interface and the keyhole periphery, the tensile shear force, and the microhardness of the stir zone of the FSSW welded AZ61 alloy joint are the highest in all samples. During FSSW of AZ31 and AZ61 dissimilar magnesium alloys, the irregular deformation of the longitudinal segment of the curved interface appears, while the microhardness of the stir zone is higher when AZ61 alloy is the upper sheet. Moreover, the microhardness of the stir zone increases initially and then decreases sharply in the longitudinal test position.

Virtual modeling of polycrystalline structures of materials using particle packing algorithms and Laguerre cells

NASA Astrophysics Data System (ADS)

Morfa, Carlos Recarey; Farias, Márcio Muniz de; Morales, Irvin Pablo Pérez; Navarra, Eugenio Oñate Ibañez de; Valera, Roberto Roselló

2018-04-01

The influence of the microstructural heterogeneities is an important topic in the study of materials. In the context of computational mechanics, it is therefore necessary to generate virtual materials that are statistically equivalent to the microstructure under study, and to connect that geometrical description to the different numerical methods. Herein, the authors present a procedure to model continuous solid polycrystalline materials, such as rocks and metals, preserving their representative statistical grain size distribution. The first phase of the procedure consists of segmenting an image of the material into adjacent polyhedral grains representing the individual crystals. This segmentation allows estimating the grain size distribution, which is used as the input for an advancing front sphere packing algorithm. Finally, Laguerre diagrams are calculated from the obtained sphere packings. The centers of the spheres give the centers of the Laguerre cells, and their radii determine the cells' weights. The cell sizes in the obtained Laguerre diagrams have a distribution similar to that of the grains obtained from the image segmentation. That is why those diagrams are a convenient model of the original crystalline structure. The above-outlined procedure has been used to model real polycrystalline metallic materials. The main difference with previously existing methods lies in the use of a better particle packing algorithm.

Hydride Microstructure at the Metal-Oxide Interface of Zircaloy-4 from H.B. Robinson Nuclear Reactor

DOE Office of Scientific and Technical Information (OSTI.GOV)

Cinbiz, Mahmut N; Edmondson, Philip D; Terrani, Kurt A

2017-01-01

This study investigates the hydride rim microstructure at the metal-oxide interface of Zircaloy-4 cladding segment removed from H.B. Robinson Nuclear Reactor by utilizing high resolution electron microscopy techniques with energy dispersive x-ray spectroscopy at Oak Ridge National Laboratory under the NSUF Rapid Turnout Experiment program. A complex stacking and orientation of hydride platelets has been observed below the sub-oxide layer. Furthermore, radial hydride platelets have been observed. EDS signals of both Fe and Cr has been reduced within hydrides whereas EDS signal of Sn is unaffected.

Uncovering the true nature of deformation microstructures using 3D analysis methods

NASA Astrophysics Data System (ADS)

Ferry, M.; Quadir, M. Z.; Afrin, N.; Xu, W.; Loeb, A.; Soe, B.; McMahon, C.; George, C.; Bassman, L.

2015-08-01

Three-dimensional electron backscatter diffraction (3D EBSD) has emerged as a powerful technique for generating 3D crystallographic information in reasonably large volumes of a microstructure. The technique uses a focused ion beam (FIB) as a high precision serial sectioning device for generating consecutive ion milled surfaces of a material, with each milled surface subsequently mapped by EBSD. The successive EBSD maps are combined using a suitable post-processing method to generate a crystallographic volume of the microstructure. The first part of this paper shows the usefulness of 3D EBSD for understanding the origin of various structural features associated with the plastic deformation of metals. The second part describes a new method for automatically identifying the various types of low and high angle boundaries found in deformed and annealed metals, particularly those associated with grains exhibiting subtle and gradual variations in orientation. We have adapted a 2D image segmentation technique, fast multiscale clustering, to 3D EBSD data using a novel variance function to accommodate quaternion data. This adaptation is capable of segmenting based on subtle and gradual variation as well as on sharp boundaries within the data. We demonstrate the excellent capabilities of this technique with application to 3D EBSD data sets generated from a range of cold rolled and annealed metals described in the paper.

Atypical transitions in material response during constant strain rate, hot deformation of austenitic steel

NASA Astrophysics Data System (ADS)

Borah, Utpal; Aashranth, B.; Samantaray, Dipti; Kumar, Santosh; Davinci, M. Arvinth; Albert, Shaju K.; Bhaduri, A. K.

2017-10-01

Work hardening, dynamic recovery and dynamic recrystallization (DRX) occurring during hot working of austenitic steel have been extensively studied. Various empirical models describe the nature and effects of these phenomena in a typical framework. However, the typical model is sometimes violated following atypical transitions in deformation mechanisms of the material. To ascertain the nature of these atypical transitions, researchers have intentionally introduced discontinuities in the deformation process, such as interrupting the deformation as in multi-step rolling and abruptly changing the rate of deformation. In this work, we demonstrate that atypical transitions are possible even in conventional single-step, constant strain rate deformation of austenitic steel. Towards this aim, isothermal, constant true strain rate deformation of austenitic steel has been carried out in a temperature range of 1173-1473 K and strain rate range of 0.01-100 s-1. The microstructural response corresponding to each deformation condition is thoroughly investigated. The conventional power-law variation of deformation grain size (D) with peak stress (σp) during DRX is taken as a typical model and experimental data is tested against it. It is shown that σp-D relations exhibit an atypical two-slope linear behaviour rather than a continuous power law relation. Similarly, the reduction in σp with temperature (T) is found to consist of two discrete linear segments. In practical terms, the two linear segments denote two distinct microstructural responses to deformation. As a consequence of this distinction, the typical model breaks down and is unable to completely relate microstructural evolution to flow behaviour. The present work highlights the microstructural mechanisms responsible for this atypical behavior and suggests strategies to incorporate the two-slope behaviour in the DRX model.

Characterization of basin concrete in support of structural integrity demonstration for extended storage

DOE Office of Scientific and Technical Information (OSTI.GOV)

Duncan, A.

Concrete core samples from C basin were characterized through material testing and analysis to verify the design inputs for structural analysis of the L Basin and to evaluate the type and extent of changes in the material condition of the concrete under extended service for fuel storage. To avoid the impact on operations, core samples were not collected from L area, but rather, several concrete core samples were taken from the C Basin prior to its closure. C basin was selected due to its similar environmental exposure and service history compared to L Basin. The microstructure and chemical composition ofmore » the concrete exposed to the water was profiled from the water surface into the wall to evaluate the impact and extent of exposure. No significant leaching of concrete components was observed. Ingress of carbonation or deleterious species was determined to be insignificant. No evidence of alkali-silica reactions (ASR) was observed. Ettringite was observed to form throughout the structure (in air voids or pores); however, the sulfur content was measured to be consistent with the initial concrete that was used to construct the facility. Similar ettringite trends were observed in the interior segments of the core samples. The compressive strength of the concrete at the mid-wall of the basin was measured, and similar microstructural analysis was conducted on these materials post compression testing. The microstructure was determined to be similar to near-surface segments of the core samples. The average strength was 4148 psi, which is well-above the design strength of 2500 psi. The analyses showed that phase alterations and minor cracking in a microstructure did not affect the design specification for the concrete.« less

Segmentation in cohesive systems constrained by elastic environments

NASA Astrophysics Data System (ADS)

Novak, I.; Truskinovsky, L.

2017-04-01

The complexity of fracture-induced segmentation in elastically constrained cohesive (fragile) systems originates from the presence of competing interactions. The role of discreteness in such phenomena is of interest in a variety of fields, from hierarchical self-assembly to developmental morphogenesis. In this paper, we study the analytically solvable example of segmentation in a breakable mass-spring chain elastically linked to a deformable lattice structure. We explicitly construct the complete set of local minima of the energy in this prototypical problem and identify among them the states corresponding to the global energy minima. We show that, even in the continuum limit, the dependence of the segmentation topology on the stretching/pre-stress parameter in this problem takes the form of a devil's type staircase. The peculiar nature of this staircase, characterized by locking in rational microstructures, is of particular importance for biological applications, where its structure may serve as an explanation of the robustness of stress-driven segmentation. This article is part of the themed issue 'Patterning through instabilities in complex media: theory and applications.'

Effect of heavy ion irradiation on microstructural evolution in CF8 cast austenitic stainless steel

DOE PAGES

Chen, Wei-Ying; Li, Meimei; Kirk, Marquis A.; ...

2015-08-21

The microstructural evolution in ferrite and austenitic in cast austenitic stainless steel (CASS) CF8, as received or thermally aged at 400 °C for 10,000 h, was followed under TEM with in situ irradiation of 1 MeV Kr ions at 300 and 350 °C to a fluence of 1.9 × 10 15 ions/cm 2 (~3 dpa) at the IVEM-Tandem Facility. For the unaged CF8, the irradiation-induced dislocation loops appeared at a much lower dose in the austenite than in the ferrite. At the end dose, the austenite formed a well-developed dislocation network microstructure, while the ferrite exhibited an extended dislocation structuremore » as line segments. Compared to the unaged CF8, the aged specimen appeared to have lower rate of damage accumulation. The rate of microstructural evolution under irradiation in the ferrite was significantly lower in the aged specimen than in the unaged. Finally, we attributed this difference to the different initial microstructures in the unaged and aged specimens, which implies that thermal aging and irradiation are not independent but interconnected damage processes.« less

Paul Fleming | NREL

Science.gov Websites

Paul Fleming Photo of Paul Fleming Paul Fleming Researcher IV-Control Engineering Paul.Fleming analysis of control systems for wind energy. Paul co-designed the control system used for field testing of advanced control systems on the CARTs, located at the NWTC. Since joining NREL, he has researched topics

Paul Veers | NREL

Science.gov Websites

Veers Photo of Paul Veers Paul Veers Group Research Manager III-Mechanical Engineering Paul.Veers @nrel.gov | 303-384-7197 Paul Veers is the Chief Engineer at the NWTC and represents NREL on DOE's Staff at Sandia National Laboratories. Paul has authored over 70 articles, papers, book chapters, and

Paul Denholm | NREL

Science.gov Websites

Denholm Photo of Paul Denholm Paul Denholm Principal Energy Analyst Paul.Denholm@nrel.gov | 303-384 -7488 Paul Denholm is a member of the Grid Systems Analysis Group in the Strategic Energy Analysis Center. Paul is a leading researcher in grid applications for energy storage and solar energy. He

High-Fidelity Preservation of Quantum Information During Trapped-Ion Transport

NASA Astrophysics Data System (ADS)

Kaufmann, Peter; Gloger, Timm F.; Kaufmann, Delia; Johanning, Michael; Wunderlich, Christof

2018-01-01

A promising scheme for building scalable quantum simulators and computers is the synthesis of a scalable system using interconnected subsystems. A prerequisite for this approach is the ability to faithfully transfer quantum information between subsystems. With trapped atomic ions, this can be realized by transporting ions with quantum information encoded into their internal states. Here, we measure with high precision the fidelity of quantum information encoded into hyperfine states of a Yb171 + ion during ion transport in a microstructured Paul trap. Ramsey spectroscopy of the ion's internal state is interleaved with up to 4000 transport operations over a distance of 280 μ m each taking 12.8 μ s . We obtain a state fidelity of 99.9994 (-7+6) % per ion transport.

STS-113 crew during M-113 armored personnel carrier training

NASA Technical Reports Server (NTRS)

2002-01-01

KENNEDY SPACE CENTER, FLA. -- STS-113 Mission Specialist Michael Lopez-Alegria concentrates on driving an M-113 armored personnel carrier during emergency egress training at the pad. He is accompanied by (far left) Mission Specialist John Herrington and Commander James Wetherbee. Behind Lopez-Alegria is Pilot Paul Lockhart. The crew is preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10, by taking part in Terminal Countdown Demonstration Test activities. The TCDT includes a simulated launch countdown.. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

Pore and grain boundary migration under a temperature gradient: A phase-field model study

DOE PAGES

Biner, S. B.

2016-03-16

In this study, the collective migration behavior of pores and grain boundaries under a temperature gradient is studied for simple single crystal, bi-crystal and polycrystal configurations with a phase-field model formulism. For simulation of the microstructure of solids, composed of pores and grain boundaries, the results indicate that not only the volume fraction of pores, but also its spatial partitioning between the grain boundary junctions and the grain boundary segments appears to be important. In addition to various physical properties, the evolution kinetics, under given temperature gradients, will be strongly influenced with the initial morphology of a poly-crystalline microstructure.

Fluoropolymer Microstructure and Dynamics: Influence of Molecular Orientation Induced by Uniaxial Drawing

NASA Astrophysics Data System (ADS)

Miranda, Daniel; Yin, Chaoqing; Runt, James

Fluorinated semi-crystalline polymer films are attractive for dielectric film applications due to their chemical inertness, heat resistance, and high thermal stability. In the present investigation we explore the influence of orientation induced by uniaxial drawing on the crystalline microstructure and relaxation processes of poly(ethylene-tetrafluoroethylene) (ETFE), in order to ascertain how morphological control can benefit polymer dielectric design. When drawn below or near the Tg, the crystallinity of the drawn films is unchanged, and oriented amorphous structures and crystalline microfibrils form at high draw ratios. This orientation slows segmental relaxation, reflected by an increase in the dynamic Tg, and also delays the transition to the high temperature crystalline form of ETFE. When drawing above the Tg, the films undergo strain-induced crystallization at high draw ratios. For these films an increase in the dynamic Tg is also observed, in addition to a second segmental relaxation process, appearing as a shoulder on the primary process. We propose that this represents a contribution from a rigid amorphous fraction, having slowed chain dynamics. Supported by Office of Naval Research.

3D characterization of trans- and inter-lamellar fatigue crack in (α + β) Ti alloy

DOE Office of Scientific and Technical Information (OSTI.GOV)

Babout, Laurent, E-mail: Laurent.babout@p.lodz.pl; Jopek, Łukasz; Preuss, Michael

2014-12-15

This paper presents a three dimensional image processing strategy that has been developed to quantitatively analyze and correlate the path of a fatigue crack with the lamellar microstructure found in Ti-6246. The analysis is carried out on X-ray microtomography images acquired in situ during uniaxial fatigue testing. The crack, the primary β-grain boundaries and the α lamellae have been segmented separately and merged for the first time to allow a better characterization and understanding of their mutual interaction. This has particularly emphasized the role of translamellar crack growth at a very high propagation angle with regard to the lamellar orientation,more » supporting the central role of colonies favorably oriented for basal 〈a〉 slip to guide the crack in the fully lamellar microstructure of Ti alloy. - Highlights: • 3D tomography images reveal strong short fatigue crack interaction with α lamellae. • Proposed 3D image processing methodology makes their segmentation possible. • Crack-lamellae orientation maps show prevalence of translamellar cracking. • Angle study comforts the influence of basal/prismatic slip on crack path.« less

Textural analysis of optical coherence tomography skin images: quantitative differentiation between healthy and cancerous tissues

NASA Astrophysics Data System (ADS)

Adabi, Saba; Conforto, Silvia; Hosseinzadeh, Matin; Noe, Shahryar; Daveluy, Steven; Mehregan, Darius; Nasiriavanaki, Mohammadreza

2017-02-01

Optical Coherence Tomography (OCT) offers real-time high-resolution three-dimensional images of tissue microstructures. In this study, we used OCT skin images acquired from ten volunteers, neither of whom had any skin conditions addressing the features of their anatomic location. OCT segmented images are analyzed based on their optical properties (attenuation coefficient) and textural image features e.g., contrast, correlation, homogeneity, energy, entropy, etc. Utilizing the information and referring to their clinical insight, we aim to make a comprehensive computational model for the healthy skin. The derived parameters represent the OCT microstructural morphology and might provide biological information for generating an atlas of normal skin from different anatomic sites of human skin and may allow for identification of cell microstructural changes in cancer patients. We then compared the parameters of healthy samples with those of abnormal skin and classified them using a linear Support Vector Machines (SVM) with 82% accuracy.

Automated Bone Segmentation and Surface Evaluation of a Small Animal Model of Post-Traumatic Osteoarthritis.

PubMed

Ramme, Austin J; Voss, Kevin; Lesporis, Jurinus; Lendhey, Matin S; Coughlin, Thomas R; Strauss, Eric J; Kennedy, Oran D

2017-05-01

MicroCT imaging allows for noninvasive microstructural evaluation of mineralized bone tissue, and is essential in studies of small animal models of bone and joint diseases. Automatic segmentation and evaluation of articular surfaces is challenging. Here, we present a novel method to create knee joint surface models, for the evaluation of PTOA-related joint changes in the rat using an atlas-based diffeomorphic registration to automatically isolate bone from surrounding tissues. As validation, two independent raters manually segment datasets and the resulting segmentations were compared to our novel automatic segmentation process. Data were evaluated using label map volumes, overlap metrics, Euclidean distance mapping, and a time trial. Intraclass correlation coefficients were calculated to compare methods, and were greater than 0.90. Total overlap, union overlap, and mean overlap were calculated to compare the automatic and manual methods and ranged from 0.85 to 0.99. A Euclidean distance comparison was also performed and showed no measurable difference between manual and automatic segmentations. Furthermore, our new method was 18 times faster than manual segmentation. Overall, this study describes a reliable, accurate, and automatic segmentation method for mineralized knee structures from microCT images, and will allow for efficient assessment of bony changes in small animal models of PTOA.

In Vivo Precision of Digital Topological Skeletonization Based Individual Trabecula Segmentation (ITS) Analysis of Trabecular Microstructure at the Distal Radius and Tibia by HR-pQCT.

PubMed

Zhou, Bin; Zhang, Zhendong; Wang, Ji; Yu, Y Eric; Liu, Xiaowei Sherry; Nishiyama, Kyle K; Rubin, Mishaela R; Shane, Elizabeth; Bilezikian, John P; Guo, X Edward

2016-06-01

Trabecular plate and rod microstructure plays a dominant role in the apparent mechanical properties of trabecular bone. With high-resolution computed tomography (CT) images, digital topological analysis (DTA) including skeletonization and topological classification was applied to transform the trabecular three-dimensional (3D) network into surface and curve skeletons. Using the DTA-based topological analysis and a new reconstruction/recovery scheme, individual trabecula segmentation (ITS) was developed to segment individual trabecular plates and rods and quantify the trabecular plate- and rod-related morphological parameters. High-resolution peripheral quantitative computed tomography (HR-pQCT) is an emerging in vivo imaging technique to visualize 3D bone microstructure. Based on HR-pQCT images, ITS was applied to various HR-pQCT datasets to examine trabecular plate- and rod-related microstructure and has demonstrated great potential in cross-sectional and longitudinal clinical applications. However, the reproducibility of ITS has not been fully determined. The aim of the current study is to quantify the precision errors of ITS plate-rod microstructural parameters. In addition, we utilized three different frequently used contour techniques to separate trabecular and cortical bone and to evaluate their effect on ITS measurements. Overall, good reproducibility was found for the standard HR-pQCT parameters with precision errors for volumetric BMD and bone size between 0.2%-2.0%, and trabecular bone microstructure between 4.9%-6.7% at the radius and tibia. High reproducibility was also achieved for ITS measurements using all three different contour techniques. For example, using automatic contour technology, low precision errors were found for plate and rod trabecular number (pTb.N, rTb.N, 0.9% and 3.6%), plate and rod trabecular thickness (pTb.Th, rTb.Th, 0.6% and 1.7%), plate trabecular surface (pTb.S, 3.4%), rod trabecular length (rTb.ℓ, 0.8%), and plate-plate junction density (P-P Junc.D, 2.3%) at the tibia. The precision errors at the radius were similar to those at the tibia. In addition, precision errors were affected by the contour technique. At the tibia, precision error by the manual contour method was significantly different from automatic and standard contour methods for pTb.N, rTb.N and rTb.Th. Precision error using the manual contour method was also significantly different from the standard contour method for rod trabecular number (rTb.N), rod trabecular thickness (rTb.Th), rod-rod and plate-rod junction densities (R-R Junc.D and P-R Junc.D) at the tibia. At the radius, the precision error was similar between the three different contour methods. Image quality was also found to significantly affect the ITS reproducibility. We concluded that ITS parameters are highly reproducible, giving assurance that future cross-sectional and longitudinal clinical HR-pQCT studies are feasible in the context of limited sample sizes.

A method for three-dimensional quantitative observation of the microstructure of biological samples

NASA Astrophysics Data System (ADS)

Wang, Pengfei; Chen, Dieyan; Ma, Wanyun; Wu, Hongxin; Ji, Liang; Sun, Jialin; Lv, Danyu; Zhang, Lu; Li, Ying; Tian, Ning; Zheng, Jinggao; Zhao, Fengying

2009-07-01

Contemporary biology has developed into the era of cell biology and molecular biology, and people try to study the mechanism of all kinds of biological phenomena at the microcosmic level now. Accurate description of the microstructure of biological samples is exigent need from many biomedical experiments. This paper introduces a method for 3-dimensional quantitative observation on the microstructure of vital biological samples based on two photon laser scanning microscopy (TPLSM). TPLSM is a novel kind of fluorescence microscopy, which has excellence in its low optical damage, high resolution, deep penetration depth and suitability for 3-dimensional (3D) imaging. Fluorescent stained samples were observed by TPLSM, and afterward the original shapes of them were obtained through 3D image reconstruction. The spatial distribution of all objects in samples as well as their volumes could be derived by image segmentation and mathematic calculation. Thus the 3-dimensionally and quantitatively depicted microstructure of the samples was finally derived. We applied this method to quantitative analysis of the spatial distribution of chromosomes in meiotic mouse oocytes at metaphase, and wonderful results came out last.

St Paul fracture zone intratransform ridge basalts (Equatorial Atlantic): Insight within the mantle source diversity

NASA Astrophysics Data System (ADS)

Hemond, C.; Brunelli, D.; Maia, M.; Prigent, S.; Sichel, S. E.

2017-12-01

The St Paul Transform System offsets by 630 km the Equatorial Mid Atlantic Ridge at 1° N. It consists of four Major faults separating three intra transform ridge axes. Volcanic glassy samples were collected inside two intratransform ridge (ITR) segments during the COLMEIA cruise (Maia et al ; 2016) and samples from the third ITR available from a previous cruise ST PAUL (Hékinian et al. 2000). Major, trace elements and Hf, Pb, Sr and Nd isotopes were determined on selected hand picked glass chips. Few glassy samples recovered and analysed from abyssal hill samples open a time window of about 4.5 million years in the chemistry of the northern ITR. Results show that all samples are basaltic in composition but trace elements display contrasting images for the three ITR. The northern ITR samples are all light REE and highly incompatible enriched and are E-MORB; the central ITR samples display rather flat REE pattern with a level on enrichment of the HREE higher than the other two ITR and are T-MORB. Southern ITR samples are more heterogeneous N-MORB to T-MORB with a lower level of HREE. Isotopes reveal that the ITRs sample distinct mantle sources. In various isotope plans, the northern ITR samples plot together with published results from the MAR directly north of the St Paul F.Z. Therefore they exhibit some flavor of the Sierra Leone hotspot interacting with the MAR at 1.7°N. Central and southern ITR samples have very distinct composition from the northern ITR but resemble each other. However, for identical 206Pb/204Pb ratios, central ITR has slightly but significantly higher 207Pb/204Pb and 208Pb/204Pb, also higher 143Nd/144Nd for a given 87Sr/86Sr. Southern ITR is in chemical continuity of the MAR southward. So that central ITR samples display a rather specific composition. Off axis samples corresponding to the activity of the northern ITR up to 4.6 m.y. show that the hotspot contribution was even bigger on the spreading axis than today and might be fading with time as the MAR gets away from the Hotspot. It remains to explain how the flow of enriched material derived from the Sierra Leone hotspot passed through the large transform fault that limits the St Paul zone to the north. It is also of interest to explain the peculiar compositions of the central ITR samples that reflect neither the northern adjacent MAR composition nor the southern one.

76 FR 37194 - Surety Companies Acceptable on Federal Bonds; Change in State of Incorportation, Business Address...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-24

... State of Incorportation, Business Address and Phone; St. Paul Fire and Marine Insurance Company; St. Paul Guardian Insurance Company; St. Paul Mercury Insurance Company AGENCY: Financial Management... that St. Paul Fire and Marine Insurance Company (24767), St. Paul Guardian Insurance Company (24775...

Planning and Problem Solving

DTIC Science & Technology

1982-10-01

Artificial Intelig ~ence (Vol. III, edited by Paul R. Cohen and’ Edward A.. Feigenbaum)’, The chapter was written B’ Paul Cohen, with contributions... Artificial Intelligence (Vol. III, edited by Paul R. Cohen and EdWard A. Feigenbaum). The chapter was written by Paul R. Cohen, with contributions by Stephen...Wheevoats"EntermdI’ Planning and Problem ’Solving by Paul R. Cohen Chaptb-rXV-of Volumec III’of the Handbook of Artificial Intelligence edited by Paul R

Segmental intelligibility of synthetic speech produced by rule.

PubMed

Logan, J S; Greene, B G; Pisoni, D B

1989-08-01

This paper reports the results of an investigation that employed the modified rhyme test (MRT) to measure the segmental intelligibility of synthetic speech generated automatically by rule. Synthetic speech produced by ten text-to-speech systems was studied and compared to natural speech. A variation of the standard MRT was also used to study the effects of response set size on perceptual confusions. Results indicated that the segmental intelligibility scores formed a continuum. Several systems displayed very high levels of performance that were close to or equal to scores obtained with natural speech; other systems displayed substantially worse performance compared to natural speech. The overall performance of the best system, DECtalk--Paul, was equivalent to the data obtained with natural speech for consonants in syllable-initial position. The findings from this study are discussed in terms of the use of a set of standardized procedures for measuring intelligibility of synthetic speech under controlled laboratory conditions. Recent work investigating the perception of synthetic speech under more severe conditions in which greater demands are made on the listener's processing resources is also considered. The wide range of intelligibility scores obtained in the present study demonstrates important differences in perception and suggests that not all synthetic speech is perceptually equivalent to the listener.

Segmental intelligibility of synthetic speech produced by rule

PubMed Central

Logan, John S.; Greene, Beth G.; Pisoni, David B.

2012-01-01

This paper reports the results of an investigation that employed the modified rhyme test (MRT) to measure the segmental intelligibility of synthetic speech generated automatically by rule. Synthetic speech produced by ten text-to-speech systems was studied and compared to natural speech. A variation of the standard MRT was also used to study the effects of response set size on perceptual confusions. Results indicated that the segmental intelligibility scores formed a continuum. Several systems displayed very high levels of performance that were close to or equal to scores obtained with natural speech; other systems displayed substantially worse performance compared to natural speech. The overall performance of the best system, DECtalk—Paul, was equivalent to the data obtained with natural speech for consonants in syllable-initial position. The findings from this study are discussed in terms of the use of a set of standardized procedures for measuring intelligibility of synthetic speech under controlled laboratory conditions. Recent work investigating the perception of synthetic speech under more severe conditions in which greater demands are made on the listener’s processing resources is also considered. The wide range of intelligibility scores obtained in the present study demonstrates important differences in perception and suggests that not all synthetic speech is perceptually equivalent to the listener. PMID:2527884

Segmentation in cohesive systems constrained by elastic environments

PubMed Central

Novak, I.

2017-01-01

The complexity of fracture-induced segmentation in elastically constrained cohesive (fragile) systems originates from the presence of competing interactions. The role of discreteness in such phenomena is of interest in a variety of fields, from hierarchical self-assembly to developmental morphogenesis. In this paper, we study the analytically solvable example of segmentation in a breakable mass–spring chain elastically linked to a deformable lattice structure. We explicitly construct the complete set of local minima of the energy in this prototypical problem and identify among them the states corresponding to the global energy minima. We show that, even in the continuum limit, the dependence of the segmentation topology on the stretching/pre-stress parameter in this problem takes the form of a devil's type staircase. The peculiar nature of this staircase, characterized by locking in rational microstructures, is of particular importance for biological applications, where its structure may serve as an explanation of the robustness of stress-driven segmentation. This article is part of the themed issue ‘Patterning through instabilities in complex media: theory and applications.’ PMID:28373383

Perception of synthetic speech produced automatically by rule: Intelligibility of eight text-to-speech systems.

PubMed

Greene, Beth G; Logan, John S; Pisoni, David B

1986-03-01

We present the results of studies designed to measure the segmental intelligibility of eight text-to-speech systems and a natural speech control, using the Modified Rhyme Test (MRT). Results indicated that the voices tested could be grouped into four categories: natural speech, high-quality synthetic speech, moderate-quality synthetic speech, and low-quality synthetic speech. The overall performance of the best synthesis system, DECtalk-Paul, was equivalent to natural speech only in terms of performance on initial consonants. The findings are discussed in terms of recent work investigating the perception of synthetic speech under more severe conditions. Suggestions for future research on improving the quality of synthetic speech are also considered.

Complete volumetric decomposition of individual trabecular plates and rods and its morphological correlations with anisotropic elastic moduli in human trabecular bone.

PubMed

Liu, X Sherry; Sajda, Paul; Saha, Punam K; Wehrli, Felix W; Bevill, Grant; Keaveny, Tony M; Guo, X Edward

2008-02-01

Trabecular plates and rods are important microarchitectural features in determining mechanical properties of trabecular bone. A complete volumetric decomposition of individual trabecular plates and rods was used to assess the orientation and morphology of 71 human trabecular bone samples. The ITS-based morphological analyses better characterize microarchitecture and help predict anisotropic mechanical properties of trabecular bone. Standard morphological analyses of trabecular architecture lack explicit segmentations of individual trabecular plates and rods. In this study, a complete volumetric decomposition technique was developed to segment trabecular bone microstructure into individual plates and rods. Contributions of trabecular type-associated morphological parameters to the anisotropic elastic moduli of trabecular bone were studied. Seventy-one human trabecular bone samples from the femoral neck (FN), tibia, and vertebral body (VB) were imaged using muCT or serial milling. Complete volumetric decomposition was applied to segment trabecular bone microstructure into individual plates and rods. The orientation of each individual trabecula was determined, and the axial bone volume fractions (aBV/TV), axially aligned bone volume fraction along each orthotropic axis, were correlated with the elastic moduli. The microstructural type-associated morphological parameters were derived and compared with standard morphological parameters. Their contributions to the anisotropic elastic moduli, calculated by finite element analysis (FEA), were evaluated and compared. The distribution of trabecular orientation suggested that longitudinal plates and transverse rods dominate at all three anatomic sites. aBV/TV along each axis, in general, showed a better correlation with the axial elastic modulus (r(2) = 0.95 approximately 0.99) compared with BV/TV (r(2) = 0.93 approximately 0.94). The plate-associated morphological parameters generally showed higher correlations with the corresponding standard morphological parameters than the rod-associated parameters. Multiple linear regression models of six elastic moduli with individual trabeculae segmentation (ITS)-based morphological parameters (adjusted r(2) = 0.95 approximately 0.98) performed equally well as those with standard morphological parameters (adjusted r(2) = 0.94 approximately 0.97) but revealed specific contributions from individual trabecular plates or rods. The ITS-based morphological analyses provide a better characterization of the morphology and trabecular orientation of trabecular bone. The axial loading of trabecular bone is mainly sustained by the axially aligned trabecular bone volume. Results suggest that trabecular plates dominate the overall elastic properties of trabecular bone.

Muon g-2 Calorimeter Prototypes

DOE Office of Scientific and Technical Information (OSTI.GOV)

Polly, Chris; /Fermilab

2010-05-03

The proposed design is a tungsten-scintillating fiber calorimeter with 35 segments, each read out by a separate PMT. Tungsten, which is significantly denser than lead, produces compact showers. This is necessary, in order to improve shower separation in analysis and to fully contain the showers within a calorimeter that satisfies the strict space constraints of the experiment. A single calorimeter segment (4 x 6 x 15 cm{sup 3}) has been constructed in order establish the feasibility of the new design and study its properties. Initial tests of the detector segment at the Paul Scherrer Institute were conducted with a lowmore » energy < 400 MeV/c electron beam. A higher-energy test with electrons up to a few GeV/c was performed at the Test Beam Facility under the experimental number T-967. All data from that test have been analyzed and published, and the tungsten-scintillating fiber calorimeter still appears to be a viable candidate. For this test beam run, a larger calorimeter (15 x 15 x 11 cm{sup 3}) has been constructed and an emphasis will be placed on understanding shower leakage and the ability to separate pileup events with a more granular readout. The experimenters will measure the energy resolution, linearity, and shower size of the calorimeter segment. This will provide important information for finalizing decisions on the angle of the fibers relative to the incoming electrons and the optimal granularity of the readout.« less

3D TEM reconstruction and segmentation process of laminar bio-nanocomposites

DOE Office of Scientific and Technical Information (OSTI.GOV)

Iturrondobeitia, M., E-mail: maider.iturrondobeitia@ehu.es; Okariz, A.; Fernandez-Martinez, R.

2015-03-30

The microstructure of laminar bio-nanocomposites (Poly (lactic acid)(PLA)/clay) depends on the amount of clay platelet opening after integration with the polymer matrix and determines the final properties of the material. Transmission electron microscopy (TEM) technique is the only one that can provide a direct observation of the layer dispersion and the degree of exfoliation. However, the orientation of the clay platelets, which affects the final properties, is practically immeasurable from a single 2D TEM image. This issue can be overcome using transmission electron tomography (ET), a technique that allows the complete 3D characterization of the structure, including the measurement ofmore » the orientation of clay platelets, their morphology and their 3D distribution. ET involves a 3D reconstruction of the study volume and a subsequent segmentation of the study object. Currently, accurate segmentation is performed manually, which is inefficient and tedious. The aim of this work is to propose an objective/automated segmentation methodology process of a 3D TEM tomography reconstruction. In this method the segmentation threshold is optimized by minimizing the variation of the dimensions of the segmented objects and matching the segmented V{sub clay} (%) and the actual one. The method is first validated using a fictitious set of objects, and then applied on a nanocomposite.« less

Control of transportation death rates by varying road microstructure using segmental pavers

DOE Office of Scientific and Technical Information (OSTI.GOV)

Halperin, K.

It is known that redesign of older roads to limit the mean and top speeds along them can prevent crashes and save lives. In many parts of the world, a standard part of this redesign for lower speeds consists of repaving with segmental pavers, particularly concrete pavers. Yet no controlled experimentation has been done to establish the relationship between paver texture, speed and crash, injury and mortality rates. Two possible experiments are proposed. It is further proposed that governments in English-speaking North America cannot await the results of such experiments to begin redesigning older roads to lower their death rates.

Phanerozoic geological evolution of the Equatorial Atlantic domain

NASA Astrophysics Data System (ADS)

Basile, Christophe; Mascle, Jean; Guiraud, René

2005-10-01

The Phanerozoic geological evolution of the Equatorial Atlantic domain has been controlled since the end of Early Cretaceous by the Romanche and Saint Paul transform faults. These faults did not follow the PanAfrican shear zones, but were surimposed on Palæozoic basins. From Neocomian to Barremian, the Central Atlantic rift propagated southward in Cassiporé and Marajó basins, and the South Atlantic rift propagated northward in Potiguar and Benue basins. During Aptian times, the Equatorial Atlantic transform domain appeared as a transfer zone between the northward propagating tip of South Atlantic and the Central Atlantic. Between the transform faults, oceanic accretion started during Late Aptian in small divergent segments, from south to north: Benin-Mundaú, deep Ivorian basin-Barreirinhas, Liberia-Cassiporé. From Late Aptian to Late Albian, the Togo-Ghana-Ceará basins appeared along the Romanche transform fault, and Côte d'Ivoire-Parà-Maranhão basins along Saint Paul transform fault. They were rapidly subsiding in intra-continental settings. During Late Cretaceous, these basins became active transform continental margins, and passive margins since Santonian times. In the same time, the continental edge uplifted leading either to important erosion on the shelf or to marginal ridges parallel to the transform faults in deeper settings.

Electronegativity Equalization with Pauling Units.

ERIC Educational Resources Information Center

Bratsch, Steven G.

1984-01-01

Discusses electronegativity equalization using Pauling units. Although Pauling has qualitatively defined electronegativity as the power of an atom in a molecule to attract electrons to itself, Pauling electronegativities are treated in this paper as prebonded, isolated-atom quantities. (JN)

Transpressive mantle uplift at large offset oceanic transform faults

NASA Astrophysics Data System (ADS)

Maia, M.; Briais, A.; Brunelli, D.; Ligi, M.; Sichel, S. E.; Campos, T.

2017-12-01

Large-offset transform faults deform due to changes in plate motions and local processes. At the St. Paul transform, in the Equatorial Atlantic, a large body of ultramafic rocks composed of variably serpentinized and mylonitized peridotites is presently being tectonically uplifted. We recently discovered that the origin of the regional mantle uplift is linked to long-standing compressive stresses along the transform fault (1). A positive flower structure, mainly made of mylonitized mantle rocks, can be recognized on the 200 km large push-up ridge. Compressive earthquakes mechanisms reveal seismically active thrust faults on the southern flank of the ridge . The regional transpressive stress field affects a large portion of the ridge segment south of the transform, as revealed by the presence of faults and dykes striking obliquely to the direction of the central ridge axis. A smaller thrust, affecting recent sediments, was mapped south of this segment, suggesting a regional active compressive stress field. The transpressive stress field is interpreted to derive from the propagation of the Mid-Atlantic Ridge (MAR) segment into the transform domain as a response to the enhanced melt supply at the ridge axis. The propagation forced the migration and segmentation of the transform fault southward and the formation of restraining step-overs. The process started after a counterclockwise change in plate motion at 11 Ma initially resulting in extensive stress of the transform domain. A flexural transverse ridge formed in response. Shortly after plate reorganization, the MAR segment started to propagate southwards due to the interaction of the ridge and the Sierra Leone thermal anomaly. 1- Maia et al., 2016. Extreme mantle uplift and exhumation along a transpressive transform fault Nat. Geo. doi:10.1038/ngeo2759

SiO(x) nanoparticles synthesized by an evaporation and condensation process using induction melting of silicon and gas injection.

PubMed

Jang, Bo Yun; Lee, Jin Seok; Kim, Joon Soo

2013-05-01

SiO(x) nanoparticles were synthesized using a specially designed induction melting system equipped with a segmented graphite crucible. The graphite crucible with the segmented wall was the key to enhancing the evaporation rate due to the increase of the evaporation area and convection of the silicon melt. Injection of the gas mixture of oxygen (O2) and argon (Ar) on silicon (Si) melt caused the formation of SiO(x) nanoparticles. The evaporated SiO(x) nanoparticles were then cooled and condensed in a process chamber. The effects of the O2/Ar ratio in the injection gas on the microstructures of the SiO(x) nanoparticles were then investigated. Synthesized SiO(x) nanoparticles were proven to be of a homogeneous amorphous phase with average diameters of 30-35 nm. The microstructures were independent from the O2/Ar ratio of the injected gas. However, x increased from 1.36 to 1.84 as the O2/Ar ratio increased. The purity of the synthesized nanoparticles was about 99.9%. SiO(x) nanoparticles could be applied as the active anode material in a lithium (Li) ion secondary battery.

Microstructure analysis of the secondary pulmonary lobules by 3D synchrotron radiation CT

NASA Astrophysics Data System (ADS)

Fukuoka, Y.; Kawata, Y.; Niki, N.; Umetani, K.; Nakano, Y.; Ohmatsu, H.; Moriyama, N.; Itoh, H.

2014-03-01

Recognition of abnormalities related to the lobular anatomy has become increasingly important in the diagnosis and differential diagnosis of lung abnormalities at clinical routines of CT examinations. This paper aims a 3-D microstructural analysis of the pulmonary acinus with isotropic spatial resolution in the range of several micrometers by using micro CT. Previously, we demonstrated the ability of synchrotron radiation micro CT (SRμCT) using offset scan mode in microstructural analysis of the whole part of the secondary pulmonary lobule. In this paper, we present a semiautomatic method to segment the acinar and subacinar airspaces from the secondary pulmonary lobule and to track small vessels running inside alveolar walls in human acinus imaged by the SRμCT. The method beains with and segmentation of the tissues such as pleural surface, interlobular septa, alveola wall, or vessel using a threshold technique and 3-D connected component analysis. 3-D air space are then conustructed separated by tissues and represented branching patterns of airways and airspaces distal to the terminal bronchiole. A graph-partitioning approach isolated acini whose stems are interactively defined as the terminal bronchiole in the secondary pulmonary lobule. Finally, we performed vessel tracking using a non-linear sate space which captures both smoothness of the trajectories and intensity coherence along vessel orientations. Results demonstrate that the proposed method can extract several acinar airspaces from the 3-D SRμCT image of secondary pulmonary lobule and that the extracted acinar airspace enable an accurate quantitative description of the anatomy of the human acinus for interpretation of the basic unit of pulmonary structure and function.

Processing and refinement of steel microstructure images for assisting in computerized heat treatment of plain carbon steel

NASA Astrophysics Data System (ADS)

Gupta, Shubhank; Panda, Aditi; Naskar, Ruchira; Mishra, Dinesh Kumar; Pal, Snehanshu

2017-11-01

Steels are alloys of iron and carbon, widely used in construction and other applications. The evolution of steel microstructure through various heat treatment processes is an important factor in controlling properties and performance of steel. Extensive experimentations have been performed to enhance the properties of steel by customizing heat treatment processes. However, experimental analyses are always associated with high resource requirements in terms of cost and time. As an alternative solution, we propose an image processing-based technique for refinement of raw plain carbon steel microstructure images, into a digital form, usable in experiments related to heat treatment processes of steel in diverse applications. The proposed work follows the conventional steps practiced by materials engineers in manual refinement of steel images; and it appropriately utilizes basic image processing techniques (including filtering, segmentation, opening, and clustering) to automate the whole process. The proposed refinement of steel microstructure images is aimed to enable computer-aided simulations of heat treatment of plain carbon steel, in a timely and cost-efficient manner; hence it is beneficial for the materials and metallurgy industry. Our experimental results prove the efficiency and effectiveness of the proposed technique.

In Situ Imaging during Compression of Plastic Bonded Explosives for Damage Modeling

NASA Astrophysics Data System (ADS)

Yeager, John; Manner, Virginia; Patterson, Brian; Walters, David; Cordes, Nikolaus; Henderson, Kevin; Tappan, Bryce; Luscher, Darby

2017-06-01

The microstructure of plastic bonded explosives (PBXs) is known to influence behavior during insults such as deformation, heating or initiation to detonation. Obtaining three-dimensional microstructural data can be difficult due in part to fragility of the material and small feature size. X-ray computed tomography (CT) is an ideal characterization technique but the explosive crystals and binder in formulations such as PBX 9501 do not have sufficient x-ray contrast to differentiate between the components. Here, we have formulated several PBXs using octahydro-1,3,5,7-tetranitro-1,3,5,7- tetrazocine (HMX) crystals and low-density binder systems. The full three-dimensional microstructure of these samples has been characterized using microscale CT during uniaxial mechanical compression in an interrupted in situ modality. The rigidity of the binder was observed to significantly influence fracture, crystal-binder delamination, and material flow. Additionally, the segmented, 3D images were meshed for finite element simulation. Initial results of the mesoscale modeling exhibit qualitatively similar delamination. Los Alamos National Laboratory - LDRD.

SOFC Microstructures (PFIB-SEM and synthetic) from JPS 2018

DOE Office of Scientific and Technical Information (OSTI.GOV)

Hsu, Tim; Epting, William K; Mahbub, Rubayyat

This is the microstructural data used in the publication "Mesoscale characterization of local property distributions in hetergeneous electrodes" by Tim Hsu, William K. Epting, Rubayyat Mahbub, et al., published in the Journal of Power Sources in 2018 (DOI 10.1016/j.jpowsour.2018.03.025). Included are a commercial cathode and anode active layer (Materials and Systems Research, Inc., Salt Lake City, UT) imaged by Xe plasma FIB-SEM (FEI, Hillsboro, OR), and four synthetic microstructures of varying particle size distribution widths generated by DREAM3D (BlueQuartz Software, Springboro, OH). For the MSRI electrodes, both the original greyscale and the segmented versions are provided. Each .zip file containsmore » a "stack" of .tif image files in the Z dimension, and an .info ascii text file containing useful information like voxel sizes and phase IDs. More details can be found in the pertinent publication at http://dx.doi.org/10.1016/j.jpowsour.2018.03.025.« less

Ultrasonic Phased Array Sound Field Mapping Through Large-Bore Coarse Grained Cast Austenitic Stainless Steel (CASS) Piping Materials

DOE Office of Scientific and Technical Information (OSTI.GOV)

Cinson, Anthony D.; Crawford, Susan L.; Prowant, Matthew S.

2012-04-16

A sound field beam mapping exercise was conducted to further understand the effects of coarse grained microstructures found in CASS materials on phased array ultrasonic wave propagation. Laboratory measurements were made on three CASS specimens with different microstructures; the specimens were polished and etched to reveal measurable grain sizes, shapes and orientations. Three longitudinal, phased array probes were fixed on a specimen's outside diameter with the sound field directed toward one end (face) of the pipe segment over a fixed range of angles. A point receiver was raster scanned over the surface of the specimen face generating a sound fieldmore » image. A slice of CASS material was then removed from the specimen end and the beam mapping exercise repeated. The sound fields acquired were analyzed for spot size, coherency, and beam redirection. Analyses were conducted between the resulting sound fields and the microstructural characteristics of each specimen.« less

Phase separated microstructure and dynamics of polyurethane elastomers under strain

NASA Astrophysics Data System (ADS)

Iacob, Ciprian; Padsalgikar, Ajay; Runt, James

The molecular mobility of polyurethane elastomers is of the utmost importance in establishing physical properties for uses ranging from automotive tires and shoe soles to more sophisticated aerospace and biomedical applications. In many of these applications, chain dynamics as well as mechanical properties under external stresses/strains are critical for determining ultimate performance. In order to develop a more complete understanding of their mechanical response, we explored the effect of uniaxial strain on the phase separated microstructure and molecular dynamics of the elastomers. We utilize X-ray scattering to investigate soft segment and hard domain orientation, and broadband dielectric spectroscopy for interrogation of the dynamics. Uniaxial deformation is found to significantly perturb the phase-separated microstructure and chain orientation, and results in a considerable slowing down of the dynamics of the elastomers. Attenuated total reflectance Fourier transform infrared spectroscopy measurements of the polyurethanes under uniaxial deformation are also employed and the results are quantitatively correlated with mechanical tensile tests and the degree of phase separation from small-angle X-ray scattering measurements.

40 CFR 81.27 - Minneapolis-St. Paul Intrastate Air Quality Control Region.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 40 Protection of Environment 17 2010-07-01 2010-07-01 false Minneapolis-St. Paul Intrastate Air... Air Quality Control Regions § 81.27 Minneapolis-St. Paul Intrastate Air Quality Control Region. The Minneapolis-St. Paul Intrastate Air Quality Control Region (Minnesota) consists of the territorial area...

75 FR 27494 - Proposed Amendment of Class E Airspace; Pauls Valley, OK

Federal Register 2010, 2011, 2012, 2013, 2014

2010-05-17

... 0182; Airspace Docket No. 10-ASW-4] Proposed Amendment of Class E Airspace; Pauls Valley, OK AGENCY... action proposes to amend Class E airspace at Pauls Valley, OK. Additional controlled airspace is necessary to accommodate new Standard Instrument Approach Procedures (SIAPs) at Pauls Valley Municipal...

Perception of synthetic speech produced automatically by rule: Intelligibility of eight text-to-speech systems

PubMed Central

GREENE, BETH G.; LOGAN, JOHN S.; PISONI, DAVID B.

2012-01-01

We present the results of studies designed to measure the segmental intelligibility of eight text-to-speech systems and a natural speech control, using the Modified Rhyme Test (MRT). Results indicated that the voices tested could be grouped into four categories: natural speech, high-quality synthetic speech, moderate-quality synthetic speech, and low-quality synthetic speech. The overall performance of the best synthesis system, DECtalk-Paul, was equivalent to natural speech only in terms of performance on initial consonants. The findings are discussed in terms of recent work investigating the perception of synthetic speech under more severe conditions. Suggestions for future research on improving the quality of synthetic speech are also considered. PMID:23225916

Meandering Musings by Linus Pauling: "American Scientists and the Spirit of the Frontier".

PubMed

Bause, George S

2016-04-01

Hoping to raise funds in 1975 for his namesake institute, Linus Pauling submitted to Esquire magazine a 32-page handwritten manuscript, "American Scientists and the Spirit of the Frontier." Angered when his submission for publication was declined, Pauling eventually gifted the original manuscript in 1986 to his friend, Linus Pauling Institute fundraiser Stephen Maddox, who would sell it in 2004 to the Wood Library-Museum of Anesthesiology. Published accurately here for the first time, the manuscript captures not only Pauling's sweeping metaphor of scientists as frontiersmen but also the creative process by which Pauling formulated his hydrate microcrystal theory of general anesthesia. Copyright © 2015 Elsevier Inc. All rights reserved.

Revisiting the phylogeny of Zoanthidea (Cnidaria: Anthozoa): Staggered alignment of hypervariable sequences improves species tree inference.

PubMed

Swain, Timothy D

2018-01-01

The recent rapid proliferation of novel taxon identification in the Zoanthidea has been accompanied by a parallel propagation of gene trees as a tool of species discovery, but not a corresponding increase in our understanding of phylogeny. This disparity is caused by the trade-off between the capabilities of automated DNA sequence alignment and data content of genes applied to phylogenetic inference in this group. Conserved genes or segments are easily aligned across the order, but produce poorly resolved trees; hypervariable genes or segments contain the evolutionary signal necessary for resolution and robust support, but sequence alignment is daunting. Staggered alignments are a form of phylogeny-informed sequence alignment composed of a mosaic of local and universal regions that allow phylogenetic inference to be applied to all nucleotides from both hypervariable and conserved gene segments. Comparisons between species tree phylogenies inferred from all data (staggered alignment) and hypervariable-excluded data (standard alignment) demonstrate improved confidence and greater topological agreement with other sources of data for the complete-data tree. This novel phylogeny is the most comprehensive to date (in terms of taxa and data) and can serve as an expandable tool for evolutionary hypothesis testing in the Zoanthidea. Spanish language abstract available in Text S1. Translation by L. O. Swain, DePaul University, Chicago, Illinois, 60604, USA. Copyright © 2017 Elsevier Inc. All rights reserved.

"Between the Heavens and the Earth": Narrating the Execution of Moses Paul

ERIC Educational Resources Information Center

Salyer, Matt

2012-01-01

The 1772 execution of the Mohegan sailor Moses Paul served as the occasion for Samson Occom's popular "Sermon," reprinted in numerous editions. Recent work by Ava Chamberlain seeks to recover Paul's version of events from contemporary court records. This article argues that Paul's "firsthand" account of the case and autobiographical narrative…

Architecture and Microstructure of Cortical Bone in Reconstructed Canine Mandibles after Bone Transport Distraction Osteogenesis

PubMed Central

Zapata, Uriel; Halvachs, Emily K.; Dechow, Paul C.; Elsalanty, Mohammed E.; Opperman, Lynne A.

2011-01-01

Purpose Reconstruction of the canine mandible using bone transport distraction osteogenesis has been shown to be a suitable method for correcting segmental bone defects produced by cancer, gunshots, and trauma. Although the mechanical quality of the new regenerate cortical bone seems to be related to the mineralization process, several questions regarding the micro-structural patterns of the new bony tissue remain unanswered. The purpose of this study was to quantify any microstructural differences that may exist between the regenerate and control cortical bone. Methods Five adult American foxhound dogs underwent unilateral bone transport distraction of the mandible to repair 30–35 mm bone defects. Animals were sacrificed 12 weeks after the beginning of the consolidation period. Fourteen cylindrical cortical samples were extracted from the superior, medial, and inferior aspects of the lingual and buccal plates of the reconstructed aspect of the mandible and 21 specimens were collected similarly from the contralateral aspect of the mandible. The specimens were evaluated using histomorphometric and micro-computed tomography techniques to compare their microstructure. Results Except for differences in Haversian canal area, histomorphometric analyses suggested no statistical differences in microstructure between regenerate and control cortical bone. Morphological evaluation suggested a consistent level of anisotropy possibly related to the distraction vector. Conclusions After 12 weeks consolidation, bone created during bone transport distraction osteogenesis is comparable to native bone in microstructure, architecture, and mechanical properties. It is proposed that after enough time, the properties of the regenerate bone will be identical to that of native bone. PMID:21927873

Complete Volumetric Decomposition of Individual Trabecular Plates and Rods and Its Morphological Correlations With Anisotropic Elastic Moduli in Human Trabecular Bone

PubMed Central

Liu, X Sherry; Sajda, Paul; Saha, Punam K; Wehrli, Felix W; Bevill, Grant; Keaveny, Tony M; Guo, X Edward

2008-01-01

Trabecular plates and rods are important microarchitectural features in determining mechanical properties of trabecular bone. A complete volumetric decomposition of individual trabecular plates and rods was used to assess the orientation and morphology of 71 human trabecular bone samples. The ITS-based morphological analyses better characterize microarchitecture and help predict anisotropic mechanical properties of trabecular bone. Introduction Standard morphological analyses of trabecular architecture lack explicit segmentations of individual trabecular plates and rods. In this study, a complete volumetric decomposition technique was developed to segment trabecular bone microstructure into individual plates and rods. Contributions of trabecular type–associated morphological parameters to the anisotropic elastic moduli of trabecular bone were studied. Materials and Methods Seventy-one human trabecular bone samples from the femoral neck (FN), tibia, and vertebral body (VB) were imaged using μCT or serial milling. Complete volumetric decomposition was applied to segment trabecular bone microstructure into individual plates and rods. The orientation of each individual trabecula was determined, and the axial bone volume fractions (aBV/TV), axially aligned bone volume fraction along each orthotropic axis, were correlated with the elastic moduli. The microstructural type–associated morphological parameters were derived and compared with standard morphological parameters. Their contributions to the anisotropic elastic moduli, calculated by finite element analysis (FEA), were evaluated and compared. Results The distribution of trabecular orientation suggested that longitudinal plates and transverse rods dominate at all three anatomic sites. aBV/TV along each axis, in general, showed a better correlation with the axial elastic modulus (r 2 = 0.95∼0.99) compared with BV/TV (r 2 = 0.93∼0.94). The plate-associated morphological parameters generally showed higher correlations with the corresponding standard morphological parameters than the rod-associated parameters. Multiple linear regression models of six elastic moduli with individual trabeculae segmentation (ITS)-based morphological parameters (adjusted r 2 = 0.95∼0.98) performed equally well as those with standard morphological parameters (adjusted r 2 = 0.94∼0.97) but revealed specific contributions from individual trabecular plates or rods. Conclusions The ITS-based morphological analyses provide a better characterization of the morphology and trabecular orientation of trabecular bone. The axial loading of trabecular bone is mainly sustained by the axially aligned trabecular bone volume. Results suggest that trabecular plates dominate the overall elastic properties of trabecular bone. PMID:17907921

75 FR 67303 - Determinations of Attainment by the Applicable Attainment Date for the Hayden, Nogales, Paul Spur...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-11-02

... of Attainment by the Applicable Attainment Date for the Hayden, Nogales, Paul Spur/Douglas PM 10... proposes to determine that the Hayden, Nogales, and Paul Spur/Douglas nonattainment areas in Arizona... Hayden, Nogales and Paul Spur/Douglas nonattainment areas are not currently attaining the PM 10 standard...

77 FR 41168 - Marine Mammals; Subsistence Taking of Northern Fur Seals; St. Paul Island

Federal Register 2010, 2011, 2012, 2013, 2014

2012-07-12

... Mammals; Subsistence Taking of Northern Fur Seals; St. Paul Island AGENCY: National Marine Fisheries... taking of northern fur seals on St. Paul Island. St. Paul's petition requests that NMFS revise the... seals; take a total of up to 3,000 fur seals annually compared to 2,000 currently allowed, including up...

78 FR 46938 - St. Paul Park Refining Co. LLC v. Enbridge Pipelines (North Dakota) LLC; Notice of Complaint

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-02

... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. OR13-28-000] St. Paul Park..., 2013, St. Paul Park Refining Co. LLC (Complainant) filed a formal complaint against Enbridge Pipelines... regulatory basis. St. Paul Park Refining Co. LLC certifies that copies of the complaint were served on the...

75 FR 34097 - Expansion of Foreign-Trade Zone 119; Minneapolis-St. Paul Area

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-16

... DEPARTMENT OF COMMERCE Foreign-Trade Zones Board [Order No. 1684] Expansion of Foreign-Trade Zone 119; Minneapolis-St. Paul Area Pursuant to its authority under the Foreign-Trade Zones Act of June 18... Sites 7 and 8 in the Minneapolis-St. Paul area, adjacent to the Minneapolis-St. Paul Customs and Border...

"Dancing Cannot Start Too Soon": Spiritual Education in the Thought of Jean Paul Friedrich Richter

ERIC Educational Resources Information Center

Pridmore, John

2004-01-01

Johann Paul Friedrich Richter (1763-1825) adopted the pen-name "Jean Paul" in honour of Jean Jaques Rousseau. His "Levana or the doctrine of education" ("Levana oder Erziehlehre") was once a standard text and required reading in teacher education. Outside Germany the name of Jean Paul is now little known and the…

Ground Water Atlas of the United States: Segment 9, Iowa, Michigan, Minnesota, Wisconsin

USGS Publications Warehouse

Olcott, Perry G.

1992-01-01

Segment 9, which consists of Minnesota, Iowa, Wisconsin, and Michigan, abuts the Canadian border in the upper Midwest and lies adjacent to or surrounds four of the Great Lakes-Superior, Michigan, Huron, and Erie. Thousands of small to large lakes similar to the one shown in figure 1 dot the landscape, which is drained by numerous rivers and streams tributary primarily to the Mississippi River in the west and to the Great Lakes-St. Lawrence River system in the east. These abundant surface-water sources represent an ample supply of water to large users, such as the cities of Milwaukee, Wis., and Detroit, Mich. However, water stored in unconsolidated and consolidated sedimentary-rock aquifers that underlie the four States also is in abundant supply and is an economical source that can be used for nearly any purpose, usually with little or no treatment. In more than 95 percent of the four-State area, these aquifers supply water to a broad spectrum of consumers-from individual households to cities, such as St. Paul, Minn., Madison, Wis., and Lansing, Mich. These aquifers are the subject of this chapter. The geology and the hydrology of each of the principal aquifers are illustrated and discussed insofar as information was available from the literature. Hydrogeology, ground-water flow, availability and quality of water, and freshwater withdrawals from each of the aquifers are the principal subjects of discussion. Population in the four States is concentrated in the cities and is thinly dispersed in the broad agricultural areas of the States (fig. 2). Minneapolis-St. Paul, Minn., Des Moines, Iowa, Milwaukee and Madison, Wis., and Detroit and Lansing, Mich., are a few of the principal cities. Many of these cities and other large population centers represent areas of concentrated ground-water withdrawals. Precipitation is the source of all water in Segment 9. Average annual precipitation ranges from about 20 to 40 inches across the segment and generally increases from northwest to southeast (fig. 3). Precipitation is least in the northwestern part of the segment because of the orographic effect of the Rocky Mountains, which are hundreds of miles to the west. Annual precipitation in excess of 36 inches that falls south and east of Lakes Superior and Michigan (fig. 3) is a result of the prevailing westerly winds that evaporate moisture from the lakes; this moisture subsequently condenses and falls as precipitation over the land. Average annual runoff in rivers and streams (fig. 4) generally reflects average annual precipitation patterns (fig. 3). Runoff generally increases from less than 1 to more than 20 inches. Runoff also tends to be substantial downwind from Lakes Superior and Michigan. However, in no part of the segment does runoff exceed precipitation. Much of the water from precipitation is returned to the atmosphere by evapotranspiration-evaporation from the land and water surfaces, and transpiration by plants. Some of the water is stored in aquifers through ground-water recharge or is stored on the land surface in lakes, marshes, and reservoirs. Runoff represents water from precipitation that runs directly off the land surface to streams and water discharged to streams that was stored in lakes, marshes, reservoirs, or aquifers.

Effect of high-potency cannabis on corpus callosum microstructure.

PubMed

Rigucci, S; Marques, T R; Di Forti, M; Taylor, H; Dell'Acqua, F; Mondelli, V; Bonaccorso, S; Simmons, A; David, A S; Girardi, P; Pariante, C M; Murray, R M; Dazzan, P

2016-03-01

The use of cannabis with higher Δ9-tetrahydrocannabinol content has been associated with greater risk, and earlier onset, of psychosis. However, the effect of cannabis potency on brain morphology has never been explored. Here, we investigated whether cannabis potency and pattern of use are associated with changes in corpus callosum (CC) microstructural organization, in patients with first-episode psychosis (FEP) and individuals without psychosis, cannabis users and non-users. The CC of 56 FEP (37 cannabis users) and 43 individuals without psychosis (22 cannabis users) was virtually dissected and segmented using diffusion tensor imaging tractography. The diffusion index of fractional anisotropy, mean diffusivity (MD), axial diffusivity (AD) and radial diffusivity was calculated for each segment. Across the whole sample, users of high-potency cannabis had higher total CC MD and higher total CC AD than both low-potency users and those who never used (p = 0.005 and p = 0.004, respectively). Daily users also had higher total CC MD and higher total CC AD than both occasional users and those who never used (p = 0.001 and p < 0.001, respectively). However, there was no effect of group (patient/individuals without psychosis) or group x potency interaction for either potency or frequency of use. The within-group analysis showed in fact that the effects of potency and frequency were similar in FEP users and in users without psychosis. Frequent use of high-potency cannabis is associated with disturbed callosal microstructural organization in individuals with and without psychosis. Since high-potency preparations are now replacing traditional herbal drugs in many European countries, raising awareness about the risks of high-potency cannabis is crucial.

A microstructural study of fault rocks from the SAFOD: Implications for the deformation mechanisms and strength of the creeping segment of the San Andreas Fault

NASA Astrophysics Data System (ADS)

Hadizadeh, Jafar; Mittempergher, Silvia; Gratier, Jean-Pierre; Renard, Francois; Di Toro, Giulio; Richard, Julie; Babaie, Hassan A.

2012-09-01

The San Andreas Fault zone in central California accommodates tectonic strain by stable slip and microseismic activity. We study microstructural controls of strength and deformation in the fault using core samples provided by the San Andreas Fault Observatory at Depth (SAFOD) including gouge corresponding to presently active shearing intervals in the main borehole. The methods of study include high-resolution optical and electron microscopy, X-ray fluorescence mapping, X-ray powder diffraction, energy dispersive X-ray spectroscopy, white light interferometry, and image processing. The fault zone at the SAFOD site consists of a strongly deformed and foliated core zone that includes 2-3 m thick active shear zones, surrounded by less deformed rocks. Results suggest deformation and foliation of the core zone outside the active shear zones by alternating cataclasis and pressure solution mechanisms. The active shear zones, considered zones of large-scale shear localization, appear to be associated with an abundance of weak phases including smectite clays, serpentinite alteration products, and amorphous material. We suggest that deformation along the active shear zones is by a granular-type flow mechanism that involves frictional sliding of microlithons along phyllosilicate-rich Riedel shear surfaces as well as stress-driven diffusive mass transfer. The microstructural data may be interpreted to suggest that deformation in the active shear zones is strongly displacement-weakening. The fault creeps because the velocity strengthening weak gouge in the active shear zones is being sheared without strong restrengthening mechanisms such as cementation or fracture sealing. Possible mechanisms for the observed microseismicity in the creeping segment of the SAF include local high fluid pressure build-ups, hard asperity development by fracture-and-seal cycles, and stress build-up due to slip zone undulations.

76 FR 43958 - Safety Zone; Rotary Club of Fort Lauderdale New River Raft Race, New River, Fort Lauderdale, FL

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-22

... have questions on this proposed rule, call or e-mail Lieutenant Paul A. Steiner, Sector Miami Prevention Department, Coast Guard; telephone 305-535-8724, e-mail Paul.A.Steiner@uscg.mil . If you have... Paul A. Steiner, Sector Miami Prevention Department, Coast Guard; telephone 305-535-8724, e-mail Paul.A...

Maniac Talk - Paul Newman

NASA Image and Video Library

2015-02-25

Paul Newman Maniac Lecture, February 25, 2015 NASA climate scientist Dr. Paul Newman presented a Maniac Talk entitled "Some pretty good rules for a career: Newman's own lessons." Paul traced his journey from middle of Seattle, where he grew up, moved to rural Iowa for graduate school, and made his way to NASA/GSFC in 1984, and discussed lessons to be learned from the ozone depletion story.

Neutron Spectroscopy Using LiF Thin-Film Detectors

DTIC Science & Technology

2013-03-01

Michael A. Ford, BS Second Lieutenant, USAF Approved: LTC Stephen R. McHale (Chairman) Date John W. McClory, PhD (Member) Date Justin A. Clinton, PhD...Member) Date AFIT-ENP-13-M-10 Abstract A stacked array of segmented micro-structured semiconductor neutron detectors (MSNDs) has been fabricated to...conveniently available from radioisotopes , reactions involving incident protons, deuterons, and so on must rely on artificially accelerated particles [12

Low Cost Process for Manufacture of Oxide Dispersion Strengthened (ODS) Turbine Nozzle Components.

DTIC Science & Technology

1979-12-01

SWTTPROCESS FORJIANUFACTURE OF9OXIDE)ISPERSIONSTRENGTHENED (ODS) O0 TURBINE !IJOZZLE COMPONENTS, -- , General Electric Company Aircraft Engine Group...machining processes for low pressure turbine (LPT) vanes , high pressure turbine (HPT) vanes , and HPT band segments for the F101 engine . The primary intent...for aircraft turbine nozzle components. These processes were shown capable of maintaining required microstructures and properties for the vane and

Comparing blends and blocks: Synthesis of partially fluorinated diblock polythiophene copolymers to investigate the thermal stability of optical and morphological properties

PubMed Central

Boufflet, Pierre; Wood, Sebastian; Wade, Jessica; Fei, Zhuping; Kim, Ji-Seon

2016-01-01

Summary The microstructure of the active blend layer has been shown to be a critically important factor in the performance of organic solar devices. Block copolymers provide a potentially interesting avenue for controlling this active layer microstructure in solar cell blends. Here we explore the impact of backbone fluorination in block copolymers of poly(3-octyl-4-fluorothiophene)s and poly(3-octylthiophene) (F-P3OT-b-P3OT). Two block co-polymers with varying block lengths were prepared via sequential monomer addition under Kumada catalyst transfer polymerisation (KCTP) conditions. We compare the behavior of the block copolymer to that of the corresponding homopolymer blends. In both types of system, we find the fluorinated segments tend to dominate the UV–visible absorption and molecular vibrational spectral features, as well as the thermal behavior. In the block copolymer case, non-fluorinated segments appear to slightly frustrate the aggregation of the more fluorinated block. However, in situ temperature dependent Raman spectroscopy shows that the intramolecular order is more thermally stable in the block copolymer than in the corresponding blend, suggesting that such materials may be interesting for enhanced thermal stability of organic photovoltaic active layers based on similar systems. PMID:27829922

Simultaneous measurements of photoemission and morphology of various Al alloys during mechanical deformation

NASA Astrophysics Data System (ADS)

Cai, M.; Li, W.; Dickinson, J. T.

2006-11-01

We report simultaneous measurements of strain and photoelectron emission from high purity Al (1350), Al-Mg (5052), Al-Mn (3003), Al-Cu (2024), and Al-Mg-Si (6061) alloys under uniaxial tension due to pulsed excimer laser radiation (248nm). The emission of low-energy photoelectrons is sensitive to deformation-induced changes in surface morphology, including the formation of slip lines and slip bands. Alloy composition and surface treatment significantly influence the photoemission during deformation. Surface oxide enhances the signal-to-noise level during photoemission measurement. In the early stage of deformation (strain ⩽0.04), photoemission intensity increases gradually in a nonlinear fashion. While subsequent photoemission increases almost linearly with strain until failure in samples with thin oxide layer (˜31Å), there are two linear segments of photoemission for the samples with oxide of 45Å. The onset of strain localization corresponds to the intersection point of two linear segments, usually at a strain of 0.08-0.20. A constitutive model incorporating microstructure evolution and work hardening during tensile deformation is proposed to qualitatively interpret the growth of the photoemission as a function of strain. Photoemissions from various alloys are interpreted in the light of surface treatment, work function, composition, and microstructural development during deformation.

Pyrolytic carbon membranes containing silica: morphological approach on gas transport behavior

NASA Astrophysics Data System (ADS)

Park, Ho Bum; Lee, Sun Yong; Lee, Young Moo

2005-04-01

Pyrolytic carbon membrane containing silica (C-SiO 2) is a new-class material for gas separation, and in the present work we will deal with it in view of the morphological changes arising from the difference in the molecular structure of the polymeric precursors. The silica embedded carbon membranes were fabricated by a predetermined pyrolysis step using imide-siloxane copolymers (PISs) that was synthesized from benzophenone tetracarboxylic dianhydrides (BTDA), 4,4'-oxydianiline (ODA), and amine-terminated polydimethylsiloxane (PDMS). To induce different morphologies at the same chemical composition, the copolymers were prepared using one-step (preferentially a random segmented copolymer) sand two-step polymerization (a block segmented copolymer) methods. The polymeric precursors and their pyrolytic C-SiO 2 membranes were analyzed using thermal analysis, atomic force microscopy, and transmission electron microscopy, etc. It was found that the C-SiO 2 membrane derived from the random PIS copolymer showed a micro-structure containing small well-dispersed silica domains, whereas the C-SiO 2 membrane from the block PIS copolymer exhibited a micro-structure containing large silica domains in the continuous carbon matrix. Eventually, the gas transport through these C-SiO 2 membranes was significantly affected by the morphological changes of the polymeric precursors.

Paul Frampton

NASA Astrophysics Data System (ADS)

Williams, Heather A.

2013-01-01

I was astonished by an article that appeared on physicsworld.com in November about the physicist Paul Frampton and his imprisonment for attempted cocaine smuggling ("Paul Frampton hit by 56-month drugs sentence", 22 November 2012).

Linus Pauling and sickle cell disease.

PubMed

Eaton, William A

2003-01-01

The 1949 paper by Linus Pauling et al. [Science 110 (1949) 543-548] describing the discovery of sickle cell anemia as the first molecular disease had a major impact on biology and medicine. Inspired by the scholarly works of John Edsall on the history of hemoglobin research, I present a brief retrospective analysis of Pauling's paper. This is followed by some personal recollections of Edsall and Pauling.

Microstructural Quantification, Property Prediction, and Stochastic Reconstruction of Heterogeneous Materials Using Limited X-Ray Tomography Data

NASA Astrophysics Data System (ADS)

Li, Hechao

An accurate knowledge of the complex microstructure of a heterogeneous material is crucial for quantitative structure-property relations establishment and its performance prediction and optimization. X-ray tomography has provided a non-destructive means for microstructure characterization in both 3D and 4D (i.e., structural evolution over time). Traditional reconstruction algorithms like filtered-back-projection (FBP) method or algebraic reconstruction techniques (ART) require huge number of tomographic projections and segmentation process before conducting microstructural quantification. This can be quite time consuming and computationally intensive. In this thesis, a novel procedure is first presented that allows one to directly extract key structural information in forms of spatial correlation functions from limited x-ray tomography data. The key component of the procedure is the computation of a "probability map", which provides the probability of an arbitrary point in the material system belonging to specific phase. The correlation functions of interest are then readily computed from the probability map. Using effective medium theory, accurate predictions of physical properties (e.g., elastic moduli) can be obtained. Secondly, a stochastic optimization procedure that enables one to accurately reconstruct material microstructure from a small number of x-ray tomographic projections (e.g., 20 - 40) is presented. Moreover, a stochastic procedure for multi-modal data fusion is proposed, where both X-ray projections and correlation functions computed from limited 2D optical images are fused to accurately reconstruct complex heterogeneous materials in 3D. This multi-modal reconstruction algorithm is proved to be able to integrate the complementary data to perform an excellent optimization procedure, which indicates its high efficiency in using limited structural information. Finally, the accuracy of the stochastic reconstruction procedure using limited X-ray projection data is ascertained by analyzing the microstructural degeneracy and the roughness of energy landscape associated with different number of projections. Ground-state degeneracy of a microstructure is found to decrease with increasing number of projections, which indicates a higher probability that the reconstructed configurations match the actual microstructure. The roughness of energy landscape can also provide information about the complexity and convergence behavior of the reconstruction for given microstructures and projection number.

Longitudinal Study of the Market Penetration of Cockpit Weather Information Systems

NASA Technical Reports Server (NTRS)

Stough, Harry Paul, III; Sireli, Yesim; Ozan, Erol; Kauffmann, Paul

2005-01-01

The purpose of the longitudinal research of the market penetration of cockpit weather information systems (CWIS) is to contribute to the body of knowledge on modeling advanced technology feasibility in aviation by tracking and analyzing the market adoption of CWIS over a three year period. This research takes advantage of a previous study, conducted by Dr. Paul Kauffmann in 2000, which demonstrated an integrated and cost effective approach to evaluate advanced technology feasibility, examining the feasibility of CWIS in five market segments: transport, commuter, general aviation, business, and rotorcraft. The longitudinal research consists of two consecutive studies and produced two reports. The first report was submitted in August 2003 and included general market analysis about the CWIS products in the market at the time, identified their characteristics and examined developing market dynamics.

Minneapolis-Saint Paul air cargo study

DOT National Transportation Integrated Search

2001-12-01

The Minneapolis-Saint Paul Task Force commissioned this study. It was established to address the apparent decline in air cargo through Minneapolis-Saint Paul airport in recent years. Distribution services, especially international air cargo, are stra...

58. Photographic copy of original construction plan (St. Paul Engineer's ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

58. Photographic copy of original construction plan (St. Paul Engineer's Office, Wabasha St. Bridge, Plan of Masonry, February 1899); south abutment - Wabasha Street Bridge, Spanning Mississippi River at Wabasha Street, Saint Paul, Ramsey County, MN

76 FR 73666 - Notice of Inventory Completion: Paul H. Karshner Memorial Museum, Puyallup, WA

Federal Register 2010, 2011, 2012, 2013, 2014

2011-11-29

..., 2011. ADDRESSES: Brian Fox, Director of Instructional Leadership, Puyallup School District, Paul H... criteria in 43 CFR 10.11(c)(1) should contact Brian Fox, Director of Instructional Leadership, Paul H...

The Modern Catholic Just War Tradition

DTIC Science & Technology

2012-04-15

offered a positive solution to the problems facing humanity. In fact in an address to the Vatican Diplomatic Corps, January 13, 2003, Pope John Paul II...cii Pope John Paul II. “Address of His Holiness Pope John Paul II to the Diplomatice Corps.” Speech to the Vatican Diplomatic Corps Libreria...the Vatican Diplomatic Corps Libreria Editrice Vaticana, January 2003. 4 http://www.vatican.va/holy_father/john_paul_ii/speeches/2003/january

Les instabilités antérieures de l’épaule:à propos de 73 cas

PubMed Central

Jamal, Louaste; Bousbaa, Hicham; Cherrad, Taoufik; Wahidi, Mohammed; Amhajji, Larbi; Rachid, Khalid

2016-01-01

Entre 2005 et 2014, 73patients (77 épaules) ont bénéficié d’une intervention de Latarjet pour instabilité antérieure de l’épaule. Nous avons, rétrospectivement, évalué les résultats cliniques et radiologiques de cette technique opératoire. L’intervention a été réalisée pour le traitement d’une luxation récidivante dans 69 cas, subluxation récidivante douloureuse dans 5 cas et 3 épaules douloureuses Tous les patients ont eu une évaluation radiographique avant l’intervention et lors du contrôle le plus récent. Selon le score de Rowe, 73 (94.8 %) des 77 épaules ont obtenu un résultat bon ou excellent. Au plus grand recul, 74 épaules étaient indemnes d’arthrose glénohumérale. PMID:27800066

Treatment of nasal fractures by Paul of Aegina.

PubMed

Skoulakis, Charalampos E; Manios, Andreas G; Theos, Evangelos A; Papadakis, Chariton E; Stavroulaki, Pelagia S

2008-03-01

The most exact description of the management of nasal fractures given by any physician of ancient times belongs to Paul of Aegina (AD 625-690). The goal of this article is to describe the therapeutic methods and surgical techniques used by Paul of Aegina in the treatment of nasal injuries. We studied the original Greek texts and the translation published in Venice, titled "The seven books of excellent doctor Paul of Aegina." The sixth book of his medical compendium is devoted to surgery. We identified the treatments and techniques applied to the restoration of injured noses. In this historical article we present the management of nasal fractures by Paul of Aegina. Paul of Aegina's conservative and surgical management for each form of injury was adopted by later physicians and influenced European medicine, a management surprisingly identical with the way nasal fractures are managed nowadays.

Role of coupled cataclasis-pressure solution deformation in microearthquake activity along the creeping segment of the SAF: Inferences from studies of the SAFOD core samples

NASA Astrophysics Data System (ADS)

Hadizadeh, J.; Gratier, J.; Renard, F.; Mittempregher, S.; di Toro, G.

2009-12-01

Rocks encountered in the SAFOD drill hole represent deformation in the southern-most extent of the creeping segment of the SAF north of the Parkfield. At the site and toward the northwest the SAF is characterized by aseismic creep as well as strain release through repeating microearthquakes M<3. The activity is shown to be mostly distributed as clusters aligned in the slip direction, and occurring at depths of between 3 to 5 kilometers. It has been suggested that the events are due to frequent moment release from high strength asperities constituting only about 1% or less of the total fault surface area within an otherwise weak fault gouge. We studied samples selected from the SAFOD phase 3 cores (3142m -3296m MD) using high resolution scanning electron microscopy, cathodoluminescence imaging, X-ray fluorescence mapping, and energy dispersive X-ray spectroscopy. The observed microstructural deformation that is apparently relevant to the seismological data includes clear evidence of cyclic deformation events, cataclastic flow, and pressure solution creep with attendant vein sealing and fracture healing fabrics. Friction testing of drill cuttings and modeling by others suggest that the overall creep behavior in shale-siltstone gouge may be due to low bulk friction coefficient of 0.2-0.4 for the fault rock. Furthermore, the low resistivity zone extending to about 5km beneath the SAFOD-Middle Mountain area is believed to consist of a pod of fluid-filled fractured and porous rocks. Our microstructural data indicate that the foliated shale-siltstone cataclasites are, in a highly heterogeneous way, more porous and permeable than the host rock and therefore provide for structurally controlled enhanced fluid-rock interactions. This is consistent with the observed pressure solution deformation and the microstructural indications of transiently high fluid pressures. We hypothesize that while the friction laws defining stable sliding are prevalent in bulk deformation of the creeping segment, there exist the possibility of steady conditions for repetitive healing, dilation, and rupture of populations of stress-oriented patches due to operation of pressure solution creep along the fault zone. The limitation on the total area of the locked patches at any given time would be controlled primarily by the imposed tectonic and near field rates of slip and fluid flux within the local permeability structure. The available geophysical data for the creeping section of the SAF including hypocenter cluster distribution, moment release rate, seismic rupture area (∝ healed patch size), stress drop and return time characteristics point to a highly heterogeneous internal structure at the SAFOD site, and could be used to test the proposed coupled cataclasis-pressure solution microstructural model.

The Effect of Microstructure On Transport Properties of Porous Electrodes

NASA Astrophysics Data System (ADS)

Peterson, Serena W.

The goal of this work is to further understand the relationships between porous electrode microstructure and mass transport properties. This understanding allows us to predict and improve cell performance from fundamental principles. The investigated battery systems are the widely used rechargeable Li-ion battery and the non-rechargeable alkaline battery. This work includes three main contributions in the battery field listed below. Direct Measurement of Effective Electronic Transport in Porous Li-ion Electrodes. An accurate assessment of the electronic conductivity of electrodes is necessary for understanding and optimizing battery performance. The bulk electronic conductivity of porous LiCoO2-based cathodes was measured as a function of porosity, pressure, carbon fraction, and the presence of an electrolyte. The measurements were performed by delamination of thin-film electrodes from their aluminum current collectors and by use of a four-line probe. Imaging and Correlating Microstructure To Conductivity. Transport properties of porous electrodes are strongly related to microstructure. An experimental 3D microstructure is needed not only for computation of direct transport properties, but also for a detailed electrode microstructure characterization. This work utilized X-ray tomography and focused ion beam (FIB)/scanning electron microscopy (SEM) to obtain the 3D structures of alkaline battery cathodes. FIB/SEM has the advantage of detecting carbon additives; thus, it was the main tomography tool employed. Additionally, protocols and techniques for acquiring, processing and segmenting series of FIB/SEM images were developed as part of this work. FIB/SEM images were also used to correlate electrodes' microstructure to their respective conductivities for both Li-ion and alkaline batteries. Electrode Microstructure Metrics and the 3D Stochastic Grid Model. A detailed characterization of microstructure was conducted in this work, including characterization of the volume fraction, nearest neighbor probability, domain size distribution, shape factor, and Fourier transform coefficient. These metrics are compared between 2D FIB/SEM, 3D FIB/SEM and X-ray structures. Among those metrics, the first three metrics are used as a basis for SG model parameterization. The 3D stochastic grid (SG) model is based on Monte Carlo techniques, in which a small set of fundamental inter-domain parameters are used to generate structures. This allows us to predict electrode microstructure and its effects on both electronic and ionic properties.

11. Photocopy of photograph (from St. Paul's Church) Photographer unknown ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

11. Photocopy of photograph (from St. Paul's Church) Photographer unknown 1886 'EPISCOPAL CHURCH, CORNER OF 1ST AND J ST. BENICIA' WEST AND SOUTH SIDES - St. Paul's Episcopal Church, 120 East J Street, Benicia, Solano County, CA

Effect of image scaling and segmentation in digital rock characterisation

NASA Astrophysics Data System (ADS)

Jones, B. D.; Feng, Y. T.

2016-04-01

Digital material characterisation from microstructural geometry is an emerging field in computer simulation. For permeability characterisation, a variety of studies exist where the lattice Boltzmann method (LBM) has been used in conjunction with computed tomography (CT) imaging to simulate fluid flow through microscopic rock pores. While these previous works show that the technique is applicable, the use of binary image segmentation and the bounceback boundary condition results in a loss of grain surface definition when the modelled geometry is compared to the original CT image. We apply the immersed moving boundary (IMB) condition of Noble and Torczynski as a partial bounceback boundary condition which may be used to better represent the geometric definition provided by a CT image. The IMB condition is validated against published work on idealised porous geometries in both 2D and 3D. Following this, greyscale image segmentation is applied to a CT image of Diemelstadt sandstone. By varying the mapping of CT voxel densities to lattice sites, it is shown that binary image segmentation may underestimate the true permeability of the sample. A CUDA-C-based code, LBM-C, was developed specifically for this work and leverages GPU hardware in order to carry out computations.

Fission gas bubble identification using MATLAB's image processing toolbox

DOE Office of Scientific and Technical Information (OSTI.GOV)

Collette, R.; King, J.; Keiser, Jr., D.

Automated image processing routines have the potential to aid in the fuel performance evaluation process by eliminating bias in human judgment that may vary from person-to-person or sample-to-sample. In addition, this study presents several MATLAB based image analysis routines designed for fission gas void identification in post-irradiation examination of uranium molybdenum (U–Mo) monolithic-type plate fuels. Frequency domain filtration, enlisted as a pre-processing technique, can eliminate artifacts from the image without compromising the critical features of interest. This process is coupled with a bilateral filter, an edge-preserving noise removal technique aimed at preparing the image for optimal segmentation. Adaptive thresholding provedmore » to be the most consistent gray-level feature segmentation technique for U–Mo fuel microstructures. The Sauvola adaptive threshold technique segments the image based on histogram weighting factors in stable contrast regions and local statistics in variable contrast regions. Once all processing is complete, the algorithm outputs the total fission gas void count, the mean void size, and the average porosity. The final results demonstrate an ability to extract fission gas void morphological data faster, more consistently, and at least as accurately as manual segmentation methods.« less

Fission gas bubble identification using MATLAB's image processing toolbox

DOE PAGES

Collette, R.; King, J.; Keiser, Jr., D.; ...

2016-06-08

Automated image processing routines have the potential to aid in the fuel performance evaluation process by eliminating bias in human judgment that may vary from person-to-person or sample-to-sample. In addition, this study presents several MATLAB based image analysis routines designed for fission gas void identification in post-irradiation examination of uranium molybdenum (U–Mo) monolithic-type plate fuels. Frequency domain filtration, enlisted as a pre-processing technique, can eliminate artifacts from the image without compromising the critical features of interest. This process is coupled with a bilateral filter, an edge-preserving noise removal technique aimed at preparing the image for optimal segmentation. Adaptive thresholding provedmore » to be the most consistent gray-level feature segmentation technique for U–Mo fuel microstructures. The Sauvola adaptive threshold technique segments the image based on histogram weighting factors in stable contrast regions and local statistics in variable contrast regions. Once all processing is complete, the algorithm outputs the total fission gas void count, the mean void size, and the average porosity. The final results demonstrate an ability to extract fission gas void morphological data faster, more consistently, and at least as accurately as manual segmentation methods.« less

Microstructures in striato-thalamo-orbitofrontal circuit in methamphetamine users.

PubMed

Li, Yadi; Dong, Haibo; Li, Feng; Wang, Gaoyan; Zhou, Wenhua; Yu, Rongbin; Zhang, Lingjun

2017-11-01

Background Striato-thalamo-orbitofrontal (STO) circuit plays a key role in the development of drug addiction. Few studies have investigated its microstructural abnormalities in methamphetamine (MA) users. Purpose To evaluate the microstructural changes and relevant clinical relevance of the STO circuit in MA users using diffusion tensor imaging (DTI). Material and Methods Twenty-eight MA users and 28 age-matched normal volunteers were enrolled. 3T magnetic resonance imaging (MRI) was employed to obtain structural T1-weighted (T1W) imaging and diffusion-tensor imaging (DTI) data. Freesurfer software was used for automated segmentation of the bilateral nucleus accumbens (NAc), thalami, and orbitofrontal cortex (OFC). Four DTI measures maps, fractional anisotropy (FA), mean diffusivity (MD), axial diffusion (AD), and radial diffusion (RD) were generated and non-linearly co-registered to structural space. Comparisons of DTI measures of the STO circuit were carried out between MA and controls using repeated measures analysis of variance. Correlation analyses were performed between STO circuit DTI measures and clinical characteristics. Results The MA group had significant FA reduction in the bilateral NAc, OFC, and right thalamus ( P < 0.05). Lower left OFC FA and right NAc FA/AD were associated with longer duration of MA use. Lower right OFC FA was associated with younger age at first MA use. Higher FA and lower MD/RD in the thalamus, as well as higher left OFC RD, were associated with increased psychiatric symptoms. Conclusion The STO circuit has reduced microstructural integrity in MA users. Microstructural changes in the thalamus may compensate for dysfunction in functionally connected cortices, which needs further investigation.

A Perspective on Research Challenges in Information Security

DTIC Science & Technology

2011-11-01

UNCLASSIFIED A Perspective on Research Challenges in Information Security Tamas Abraham, David Adie, Angela Billard, Paul Buckland, Michael Frangos ...Abstract (U) 4. AUTHORS Tamas Abraham, David Adie, Angela Billard, Paul Buckland, Michael Frangos , Ben Long, Mar- tin Lucas, Paul Montague, Dean Philp

Proceedings of the 2009 Antenna Applications Symposium held in Monticello, Illinois on 22-24 September 2009. Volume 1

DTIC Science & Technology

2009-12-12

Circuit Design, Theory and Applications. Prentice-Hall, 1 ed., 2000. 39 MEASUREMENT OF ELECTRICALLY SMALL ANTENNAS Suhail Barot, Paul E. Mayes, Paul ...2] “Ansoft HFSS, Version 9.2.1,” Ansoft Corporation, Pittsburgh, PA. 50 REDUCED-SIZE LINEAR ANTENNA ELEMENTS Paul E. Mayes, Paul W. Klock and...structures," IRE Internation convention, vol. 5, pp. 119-129, Mar 1957. [2] K. M. P. Aghdam, R. Faraji- Dana , and J. Rashed-Mohassel, "Compact dual

Microstructural evolution of a model, shear-banding micellar solution during shear startup and cessation.

PubMed

López-Barrón, Carlos R; Gurnon, A Kate; Eberle, Aaron P R; Porcar, Lionel; Wagner, Norman J

2014-04-01

We present direct measurements of the evolution of the segmental-level microstructure of a stable shear-banding polymerlike micelle solution during flow startup and cessation in the plane of flow. These measurements provide a definitive, quantitative microstructural understanding of the stages observed during flow startup: an initial elastic response with limited alignment that yields with a large stress overshoot to a homogeneous flow with associated micellar alignment that persists for approximately three relaxation times. This transient is followed by a shear (kink) band formation with a flow-aligned low-viscosity band that exhibits shear-induced concentration fluctuations and coexists with a nearly isotropic band of homogenous, highly viscoelastic micellar solution. Stable, steady banding flow is achieved only after approximately two reptation times. Flow cessation from this shear-banded state is also found to be nontrivial, exhibiting an initial fast relaxation with only minor structural relaxation, followed by a slower relaxation of the aligned micellar fluid with the equilibrium fluid's characteristic relaxation time. These measurements resolve a controversy in the literature surrounding the mechanism of shear banding in entangled wormlike micelles and, by means of comparison to existing literature, provide further insights into the mechanisms driving shear-banding instabilities in related systems. The methods and instrumentation described should find broad use in exploring complex fluid rheology and testing microstructure-based constitutive equations.

[Fatal diseases and "imaginary" suffering. "Hypochondria" and "consumption" in the correspondence between Jean Paul and Johann Bernhard Hermann, with a perspective on Jean Paul's literature and aesthetics].

PubMed

Meier, Monika

2007-01-01

The German writerJean Paul (Johann Paul Friedrich Richter, 1763-1825) and his friendJohann Bernhard Hermann (1761-1790) became acquainted with the thoughts of late Enlightenment at the University of Leipzig. They particularly appreciated the anthropology of Ernst Platner, who taught philosophy and aesthetics as well as medicine. Their confidential correspondence contains reflections on their respective situation and well being. Both write about feeling ill and label their illness "hypochondria". In the course of the correspondence Jean Paul's understanding of hypochondria evolves from an illness of the entrails as he follows Hermann, who supports the modern concept of hypochondria as an illness of the nerves. Two important themes from this correspondence recur in Jean Paul's novels and tales: firstly, his way of expressing comfort is related to his aesthetics, and secondly, the satirical way of portraying at least certain aspects of illness as imaginary reappears in his first successful novel "The Invisible Lodge" (1793).

Melt Spinning of Intermetallic Alloys: Heat Transfer and Microstructure

DTIC Science & Technology

1992-04-21

newly emerging mdLerials such as titanium aluminides and other intermetallic alloys[4,5]. These materials must possess good mechanical and corrosion...alloys such as titanium aluminides with the surrounding atmosphere, it utilizes a tilting water-cooled copper hearth and the apparatus is in a 5 psi Argon... titanium aluminide in the form of filament or ribbon break olf into short segments. The solidified ribbons have lengths of 5 - 15 mm, widths of 0.5

A cross-cultural comparison of eating behaviors and home food environmental factors in adolescents from São Paulo (Brazil) and Saint Paul/Minneapolis (USA)

PubMed Central

Estima, Camilla C.P.; Bruening, Meg; Hannan, Peter J.; Alvarenga, Marle S.; Leal, Greisse V.S.; Philippi, Sonia T.; Neumark-Sztainer, Dianne

2015-01-01

Objective Describe cross-cultural differences in nutrition-related factors among adolescents from São Paulo, Brazil and St. Paul/Minneapolis, U.S. Design Two large- population-based studies with cross-cultural comparisons Setting 12 São Paulo and 10 St. Paul/Minneapolis high schools in 2009-2010 Participants 1148 adolescents from São Paulo; 1632 adolescents from St. Paul/Minneapolis Main outcome measure(s) Meal consumption, family meals, fast food consumption and home food availability Analysis Binomial regressions, weighted for age distributions and adjusted for gender, were used to compare identical measures from each sample. Results Generally, São Paulo adolescents reported healthier nutritional outcomes than St. Paul/Minneapolis adolescents. São Paulo adolescents were seven times less likely to report high fast food consumption than St. Paul/Minneapolis adolescents (p<0.001). While most measures of the home environment indicated healthier home environments in São Paulo, more São Paulo adolescents reported that sugar-sweetened beverages was usually available at home than St. Paul/Minneapolis adolescents (p<0.001). Conclusions and implications São Paulo youth tended to have healthier eating behaviors and home food environment factors than St. Paul/Minneapolis youth. Brazilian eating patterns tend to be healthier and support a connection with food and culture. Interventions are needed to encourage youth and their families to maintain these patterns. PMID:24656651

A cross-cultural comparison of eating behaviors and home food environmental factors in adolescents from São Paulo (Brazil) and Saint Paul-Minneapolis (US).

PubMed

Estima, Camilla C P; Bruening, Meg; Hannan, Peter J; Alvarenga, Marle S; Leal, Greisse V S; Philippi, Sonia T; Neumark-Sztainer, Dianne

2014-01-01

Describe cross-cultural differences in nutrition-related factors among adolescents from São Paulo, Brazil and St Paul-Minneapolis, US. Two large-population-based studies with cross-cultural comparisons. Twelve São Paulo and 10 St Paul-Minneapolis high schools in 2009-2010. A total of 1,148 adolescents from São Paulo and 1,632 adolescents from St Paul-Minneapolis. Meal consumption, family meals, fast-food consumption, and home food availability. Binomial regressions, weighted for age distributions and adjusted for gender, were used to compare identical measures from each sample. Generally, São Paulo adolescents reported healthier nutritional outcomes than St Paul-Minneapolis adolescents. São Paulo adolescents were 7 times less likely to report high fast-food consumption than St Paul-Minneapolis adolescents (P < .001). Whereas most measures of the home environment indicated healthier home environments in São Paulo, more São Paulo adolescents reported that sugar-sweetened beverages were usually available at home than did St Paul-Minneapolis adolescents (P < .001). São Paulo youth tended to have healthier eating behaviors and home food environment factors than St Paul-Minneapolis youth. Brazilian eating patterns tend to be healthier and support a connection with food and culture. Interventions are needed to encourage youth and their families to maintain these patterns. Copyright © 2014 Society for Nutrition Education and Behavior. Published by Elsevier Inc. All rights reserved.

[From Paul Flechsig to the Paul Flechsig Institute for Brain Research. Development of brain research at the Karl Marx University].

PubMed

Leibnitz, L; Werner, L; Schober, W; Brauer, K

1977-04-01

A review is given on the development of the brain research institute of the Karl-Marx-University of Leipzig during the directorates of Paul Flechsig (1883-1920), Richard Arwed Pfeifer (1925-1957), and Wolfgang Wünscher (1957-1971).

67. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

67. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul Minnesota, ca. 1925. #35109. Photographer: St. Paul Daily News.) VIEW TO NORTHEAST, SHOWING SPAN NOS. 9-19, ca. 1925 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

63. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

63. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, 1958. #31008. Photographer: St. Paul Dispatch-Pioneer Press.) AERIAL VIEW OF HIGH BRIDGE, LOOKING SOUTHWEST, 1958 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

68. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

68. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, 1924. #35108. Photographer: St. Paul Daily News.) VIEW TO EAST, SHOWING SPAN NOS. 10-20, 1924 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

Catalytic Creativity: The Case of Linus Pauling.

ERIC Educational Resources Information Center

Nakamura, Jeanne; Csikszentmihalyi, Mihaly

2001-01-01

Illustrates how creativity is constituted by forces beyond the innovating individual, drawing examples from the career of chemist Linus Pauling that highlight the formative influence of the social field on an individual's relationship to the domain. Pauling's case reveals how variously the social field contributes to creativity, shaping the…

Debating Paul

ERIC Educational Resources Information Center

Torbett, David

2007-01-01

This classroom note describes the lessons I learned from the use of formal debates during the two semesters I taught "Paul and Early Christianity" to undergraduates at a liberal arts college in Ohio. The purpose of the course was primarily to give students the exegetical skills to understand Paul in his own context. The secondary purpose…

78 FR 76143 - Proposed CERCLA Settlement Relating to the Paul's Tank Cleaning Service Superfund Site...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-16

... Paul's Tank Cleaning Service Superfund Site, Burlington County, New Jersey AGENCY: Environmental.... (``Settling Party''). The Settling Party is a potentially responsible party, pursuant to Section 107(a) of CERCLA, and thus is potentially liable for response costs incurred at or in connection Paul's Tank...

The great man from Tarsus: Freud on the apostle Paul.

PubMed

Westerink, Herman

2007-01-01

The author describes developments in Freud's writings concerning his views on the apostle Paul. This development shows that Freud more and more clearly regarded Paul as a key figure in understanding the complex relationship between Judaism and Christianity--and also as a man who essentially has no comfortable place in either of these religions. For Freud, Paul was a unique figure, an analyst of the human character and of his own culture and religion--a Jew who tried to free himself and his people from the burden of the sense of guilt.

31. Photocopy of line illustration; originally published in William N. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

31. Photocopy of line illustration; originally published in William N. Carey, 'St. Paul Builds an Airport One Mile From Post Office,' Engineering News-Record, (August 21, 1930), figure 6, page 294; SHOWS CANTILEVERED ROOF-TRUSS SYSTEM OF MUNICIPAL HANGAR COMPLETED AT ST. PAUL MUNICIPAL AIRPORT IN 1930; THE STRUCTURAL DESIGN WAS BASED ON THAT OF THE NORTHWEST AIRWAYS HANGAR, EXCEPT FOR THE SUBSTITUTION OF BOWSTRING TRUSSES FOR TRAPEZOIDAL TRUSSES - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

Multistep estimators of the between-study variance: The relationship with the Paule-Mandel estimator.

PubMed

van Aert, Robbie C M; Jackson, Dan

2018-04-26

A wide variety of estimators of the between-study variance are available in random-effects meta-analysis. Many, but not all, of these estimators are based on the method of moments. The DerSimonian-Laird estimator is widely used in applications, but the Paule-Mandel estimator is an alternative that is now recommended. Recently, DerSimonian and Kacker have developed two-step moment-based estimators of the between-study variance. We extend these two-step estimators so that multiple (more than two) steps are used. We establish the surprising result that the multistep estimator tends towards the Paule-Mandel estimator as the number of steps becomes large. Hence, the iterative scheme underlying our new multistep estimator provides a hitherto unknown relationship between two-step estimators and Paule-Mandel estimator. Our analysis suggests that two-step estimators are not necessarily distinct estimators in their own right; instead, they are quantities that are closely related to the usual iterative scheme that is used to calculate the Paule-Mandel estimate. The relationship that we establish between the multistep and Paule-Mandel estimator is another justification for the use of the latter estimator. Two-step and multistep estimators are perhaps best conceptualized as approximate Paule-Mandel estimators. © 2018 The Authors. Statistics in Medicine published by John Wiley & Sons Ltd.

Paul's gospel and the rhetoric of apostolic rejection: A study of Galatians 1:15--17, 1 Corinthians 15:8, F. C. Baur, and the origins of Paul's Gentile mission

NASA Astrophysics Data System (ADS)

Mitchell, Matthew Wesley

This dissertation proposes a new understanding of Paul's Gentile mission and its relationship to his so-called "conversion." This dissertation examines the origins of Paul's mission to the Gentiles, and locates it in his claims to have been personally commissioned to undertake such a mission by Jesus. Specifically, I argue that it is the rejection of Paul's claim to be an apostle, a claim founded upon his "conversion" experience, that precipitates his mission to the Gentiles. In arguing this view, I draw upon Ferdinand Christian Baur's nineteenth century theories concerning both the unreliability of Acts as a historical source, and his proposal of a clear division between Paul and the other apostles. In establishing the methodological and theoretical framework of the dissertation, I discuss the "New Perspective on Paul" that has dominated New Testament scholarship over the past thirty years. My study is also informed methodologically by the growing interest in rhetorical criticism among biblical scholars, although the emphasis of this dissertation bears more of a resemblance to the approach of the New Rhetoric than the categories of classical, Greco-Roman rhetoric. The textual component of this work falls into two stages. The first contains a full examination of Paul's "conversion passages" in Galatians 1:15--17 and 1 Corinthians 15:8, attempting to situate these seemingly unusual self-descriptions in their cultural contexts. The second involves an examination of F. C. Baur's presentation of Paul, and the reception of Baur's views among biblical scholars throughout the years following his scholarly activity. This dissertation makes two claims, each of which can stand on its own as an important contribution to scholarship. My first claim is that components of Baur's work support my proposal concerning Paul's Gentile mission and his experience of apostolic rejection, and that this proposal has much to commend it as an explanation of a perennial scholarly puzzle. My second claim is methodological, as I demonstrate that scholarly writings about Paul and his modern interpreters are themselves exercises in argumentation, and thus are not to be accepted uncritically, or without close attention to the rhetorical practices they utilize.

Microstructural abnormalities in MEWDS demonstrated by ultrahigh resolution optical coherence tomography.

PubMed

Nguyen, My Hanh T; Witkin, Andre J; Reichel, Elias; Ko, Tony H; Fujimoto, James G; Schuman, Joel S; Duker, Jay S

2007-01-01

Histopathological studies of acute multiple evanescent white dot syndrome (MEWDS) have not been reported because of the transient and benign nature of the disease. Ultrahigh resolution optical coherence tomography (UHR-OCT), capable of high resolution in vivo imaging, offers a unique opportunity to visualize retinal microstructure in the disease. UHR-OCT images of the maculae of five patients with MEWDS were obtained and analyzed. Diagnosis was based on clinical presentation, examination, visual field testing, and angiography. UHR-OCT revealed disturbances in the photoreceptor inner/outer segment junction (IS/OS) in each of the five patients (six eyes) with MEWDS. In addition, thinning of the outer nuclear layer was seen in the case of recurrent MEWDS, suggesting that repeated episodes of MEWDS may result in photoreceptor atrophy. Subtle disruptions of the photoreceptor IS/OS are demonstrated in all eyes affected by MEWDS. UHR-OCT may be a useful adjunct to diagnosis and monitoring of MEWDS.

Geochemistry of the mantle beneath the Rodriguez Triple Junction and the South-East Indian Ridge

NASA Astrophysics Data System (ADS)

Michard, A.; Montigny, R.; Schlich, R.

1986-05-01

Rare earth element abundances and Sr, Nd. Pb isotope compositions have been measured on zero-age dredge samples from the Rodriguez Triple Junction (RTJ) and the South-East Indian Ridge (SEIR), Along the SEIR. the geochemical "halo" of the St. Paul hot spot has a half-width of about 400 km and the data may be fairly well accounted for by a binary mixing between an Indian MORB-type component ( 87Sr/ 86Sr = 0.7028. 143Nd/ 144Nd = 0.51304. 206Pb/ 204Pb = 17.8) and the plume-type St. Paul component (0.7036, 0.5129, and 18.7 respectively). The alignment of the lead isotope data is particularly good with an apparent age of 1.95 ± 0.13 Ga and Th/U source value of 3.94. One sample dredged on the ridge 60 km southeast of St. Paul bears a definite Kerguelen isotopic signature. The RTJ has distinctive geochemical properties which contrast with those of the adjacent ridge segments. Low 206Pb/ 204Pb ratios which plots to the left of the geochron, rather high 208Pb/ 204Pb and 87Sr/ 87Sr ratios (17.4. 37.4, and 0.7031 respectively), a striking isotopic homogeneity, and variable LREE/HREE fractionation with (La/Sm) N, = 0.3-0.8 make this triple junction an anomalous site. The geochemical properties of the Indian Ocean basats have been examined using a three-component mantle model involving (a) a normal MORB-type source though to represent the depleted upper mantle matrix, (b) an OIB-type source of uncertain parentage (recycled oceanic crust?), and (c) a component with low μ. low Sm/Nd. high Rb/Sr (time-averaged value) which is tentatively assigned to ancient hydrothermal and abyssal sediments recycled in the mantle. The high 208Pb/ 204Pb and 87Sr/ 86Sr ratios typical of the Dupal anomaly are likely due to the widespread distribution of this latter component in the basalt source from this area. including that for MORBs.

72. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

72. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, June 25, 1958. #31024. Photographer: St. Paul Dispatch-Pioneer Press. VIEW TO SOUTH, SHOWING THE RESURFACING OF THE BRIDGE IN 1958 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

64. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

64. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul Minnesota, ca. 1891. #35805. Photographer: Haynes and Bros., St. Paul.) VIEW TO SOUTH, SHOWING FOUR PERCENT GRADE OF HIGH BRIDGE, ca. 1981 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

76 FR 18725 - Marine Mammals; File Nos. 14330 and 14335

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-05

... (Phoca vitulina) on St. Paul, St. George, Otter, and Walrus Islands, and Sea Lion Rock, all of the... marine mammals in Alaska: (File No. 14330) the Aleut Community of St. Paul Island, Tribal Government, Ecosystem Conservation Office, St. Paul Island, AK; and (File No. 14335) the Alaska SeaLife Center, Seward...

In Conversation with Paul Richards

ERIC Educational Resources Information Center

Holman, Andrew

2013-01-01

Paul Richards is one of those individuals who make a difference and is as far from institutional as one can be. The author met up with him at the Learning Disability Today conference in London to talk more about his work and life. Paul coordinates the service user involvement across Southdown Housing Association, based in Sussex.

76 FR 9278 - Safety Zone; Fourth Annual Offshore Challenge, Sunny Isles Beach, FL

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-17

... Lieutenant Paul A. Steiner, Sector Miami Prevention Department, Coast Guard; telephone 305-535-8724, e-mail Paul.A.Steiner@uscg.mil . If you have questions on viewing or submitting material to the docket, call.... Steiner, Sector Miami Prevention Department, Coast Guard; telephone 305-535- 8724, e-mail Paul.A.Steiner...

75 FR 77899 - Notice of Inventory Completion: Minnesota Indian Affairs Council, St. Paul and Bemidji, MN

Federal Register 2010, 2011, 2012, 2013, 2014

2010-12-14

... DEPARTMENT OF THE INTERIOR National Park Service [2253-665] Notice of Inventory Completion: Minnesota Indian Affairs Council, St. Paul and Bemidji, MN AGENCY: National Park Service, Interior. ACTION... funerary objects in the possession of the Minnesota Indian Affairs Council, St. Paul and Bemidji, MN. The...

Paul Torcellini | NREL

Science.gov Websites

| 303-384-7528 Paul is the principal engineer for the Commercial Buildings Research Group and has been at the NREL for 19 years. Prior to this role, he was the group manager for the Commercial Buildings articles related to energy efficiency and zero-energy commercial buildings. Among his many awards, Paul has

75 FR 34670 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Revision to Emission...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-18

... Promulgation of Air Quality Implementation Plans; Maryland; Revision to Emission Limitations for R. Paul Smith... revision pertains to revised emission limitations for the R. Paul Smith Power Station located in Washington... R. Paul Smith Power Station in Washington County. This facility had annual nitrogen oxides (NOx...

Paul Voosen Receives 2013 David Perlman Award for Excellence in Science Journalism—News: Citation

NASA Astrophysics Data System (ADS)

Zaneski, Cyril T.

2014-01-01

It's my pleasure to nominate Paul Voosen, the former science reporter for Greenwire, for the David Perlman award. Last November, as Superstorm Sandy pounded the East Coast of the United States, Paul found himself stranded for several days in Miami, mourning a recently deceased family member.

78 FR 59317 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Revision to Emission...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-09-26

... for R. Paul Smith Power Station; Withdrawal of Proposed Rule AGENCY: Environmental Protection Agency... revision pertains to revised emission limitations for the R. Paul Smith Power Station located in Washington... action to approve the revised emission limitations for the R. Paul Smith Power Station contained in the...

The Incalculable Benefits of Revitalizing Your Board

ERIC Educational Resources Information Center

Holtschneider, Dennis H.

2013-01-01

DePaul University has grown in size and stature in the last decade. Chicago's "little school under the El," as DePaul was once known, is now the nation's largest Catholic university and the largest private, nonprofit university in the Midwest. DePaul University restructured its board, enabling it to play an important role in the…

78 FR 29612 - Prevailing Rate Systems; Redefinition of the Minneapolis-St. Paul, MN, and Southwestern Wisconsin...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-21

... OFFICE OF PERSONNEL MANAGEMENT 5 CFR Part 532 RIN 3206-AM75 Prevailing Rate Systems; Redefinition of the Minneapolis-St. Paul, MN, and Southwestern Wisconsin Appropriated Fund Federal Wage System.... Paul, MN, and Southwestern Wisconsin appropriated fund Federal Wage System (FWS) wage areas. The final...

Partnering for Environmental Security Cooperation in Central Asia and the Caspian Basin

DTIC Science & Technology

2002-04-01

Organizations.......................................................................................98 Mr. Paul Giannone Disaster Response Planning Processes...Paul Giannone of CARE USA who discussed key points of Non-governmental Organizations’ relationships with the military and provided suggestions on...Relationships between Military and Civilian Organizations Mr. Paul Giannone Disaster Response Planning Processes and Procedures Mr. Wolfgang G

Microstructural record of pressure solution and crystal plastic deformation in carbonate fault rocks from a shallow crustal strike-slip fault, Northern Calcareous Alps (Austria)

NASA Astrophysics Data System (ADS)

Bauer, Helene; Rogowitz, Anna; Grasemann, Benhard; Decker, Kurt

2017-04-01

This study presents microstructural investigations of natural carbonate fault rocks that formed by a suite of different deformation processes, involving hydro-fracturing, dissolution-precipitation creep and cataclasis. Some fault rocks show also clear indications of crystal plastic deformation, which is quite unexpected, as the fault rocks were formed in an upper crustal setting, raising the question of possible strongly localised, low temperature ductile deformation in carbonate rocks. The investigated carbonate fault rocks are from an exhumed, sinistral strike-slip fault at the eastern segment of the Salzachtal-Ennstal-Mariazell-Puchberg (SEMP) fault system in the Northern Calcareous Alps (Austria). The SEMP fault system formed during eastward lateral extrusion of the Eastern Alps in the Oligocene to Lower Miocene. Based on vitrinite reflectance data form intramontane Teritary basins within the Northern Calcareous Alps, a maximum burial depth of 4 km for the investigated fault segment is estimated. The investigated fault accommodated sinistral slip of several hundreds of meters. Microstructural analysis of fault rocks includes scanning electron microscopy, optical microscopy and electron backscattered diffraction mapping. The data show that fault rocks underwent various stages of evolution including early intense veining (hydro-fracturing) and stylolite formation reworked by localised shear zones. Cross cutting relationship reveals that veins never cross cut clay seams accumulated along stylolites. We conclude that pressure solution processes occured after hydro-fracturing. Clay enriched zones localized further deformation, producing a network of small-scale clay-rich shear zones of up to 1 mm thickness anastomosing around carbonate microlithons, varying from several mm down to some µm in size. Clay seams consist of kaolinit, chlorite and illite matrix and form (sub) parallel zones in which calcite was dissolved. Beside pressure solution, calcite microlithons show also ductile deformation microstructures, including deformation twinning, undulose extinction, subgrain rotation recrystallization and even grain boundary migration. Especially coarse grained calcites from veins localized ductile deformation and record dislocation glide. The investigated fault rocks are excellent examples of frictional, pressure solution and crystal plastic deformation processes. We speculated that crystal plastic deformation typical for higher metamorphic shear zones in marbles, can be either produced under much lower temperature conditions or the temperature necessary for crystal plastic deformation was generated by frictional slip or strain heating within the fault zone.

75 FR 72964 - Determinations of Attainment by the Applicable Attainment Date for the Hayden, Nogales, Paul Spur...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-11-29

... ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 52 [R09-OAR-2010-0718; FRL-9233-1] Determinations of Attainment by the Applicable Attainment Date for the Hayden, Nogales, Paul Spur/Douglas PM10 Nonattainment... November 2, 2010 (75 FR 67220), direct final rule determining that the Hayden, Nogales, and Paul Spur...

28. Photocopy of photograph dated ca. 1940; photographer unknown; original ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

28. Photocopy of photograph dated ca. 1940; photographer unknown; original filed as MR2.9/SP8/r373 in Audio-Visual Collection of Minnesota Historical Society, St. Paul; WEST SIDE AFTER SECOND-STORY ADDITION; LOOKING EAST - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

Religion in the Locker Room

ERIC Educational Resources Information Center

Price, Sean

2013-01-01

In September 2011, Paul Phillips stepped out of his football team's field house and into a struggle over the separation of church and state. Like most teams, Paul's practiced after school. But one day he found that the coach had called in a local minister to conduct a weekly half-hour "team chapel" before practice. Paul, who does not believe in…

76 FR 24840 - Safety Zone; 2011 Rohto Ironman 70.3 Miami, Biscayne Bay, Miami, FL

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-03

... Lieutenant Paul A. Steiner, Sector Miami Prevention Department, Coast Guard; telephone 305-535-8724, e-mail Paul.A.Steiner@uscg.mil . If you have questions on viewing or submitting material to the docket, call... Lieutenant Paul A. Steiner, Sector Miami Prevention Department, Coast Guard; telephone 305-535-8724, e-mail...

76 FR 34649 - Foreign-Trade Zone 119-Minneapolis-St. Paul, MN; Application for Reorganization Under Alternative...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-14

...--Minneapolis-St. Paul, MN; Application for Reorganization Under Alternative Site Framework An application has... current zone project includes the following sites: Site 1 (3,002 acres)--located at the Minneapolis-St...); Site 9 (20 acres)--1700 Wynne Avenue, St. Paul (Ramsey County); and, Site 10 (236 acres)-- Bloomington...

Paul D. Boyer, Adenosine Triphosphate (ATP), and the Binding Change

Science.gov Websites

-- October 1975, DOE Technical Report, 1975 A Perspective of the Binding Change Mechanism for ATP Synthesis Reports, Vol. 18, No. 3, 1998 ATP Synthesis and the Binding Change Mechanism: The Work of Paul D. Boyer Mechanism of ATP Synthesis Additional Web Pages: Adenosine Triphosphate: The Energy Currency of Life Paul D

78 FR 28633 - Prometric, Inc., a Subsidiary of Educational Testing Service, Including On-Site Leased Workers...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-15

... Subsidiary of Educational Testing Service, Including On-Site Leased Workers From Office Team St. Paul... Office Team were employed on-site at the St. Paul, Minnesota location of the subject firm. The Department... workers leased from Office Team working on- site at the St. Paul, Minnesota location of Prometric, Inc., a...

26. Photocopy of photograph dated 1930; photographer unknown; original filed ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

26. Photocopy of photograph dated 1930; photographer unknown; original filed as MR2.9/SP8/p343 in Audio-Visual Collection of Minnesota Historical Society, St. Paul; THREE-QUARTER VIEW SHOWING WEST SIDE AND SOUTH FRONT SHORTLY AFTER COMPLETION; LOOKING NORTHEAST - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

27. Photocopy of photograph dated ca. 1940; photographer unknown; original ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

27. Photocopy of photograph dated ca. 1940; photographer unknown; original filed as MR2.9/SP8/r374 in Audio-Visual Collection Minnesota Historical Society, St. Paul; THREE-QUARTER VIEW SHOWING WEST SIDE AND SOUTH FRONT AFTER SECOND-STORY ADDITION; LOOKING NORTHEAST - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

Ultrasonically Activated Diffusion Bonding for Fluidic Control Assembly

DTIC Science & Technology

1979-02-01

CONTROL ASSEMBLY SONOBOND CORPORATION SUBSIDIARY OF CHRISTIAN METALS CORPORATION WEST CHESTER, PENNSYLVANIA HOWARD A. SCHEETZ PAUL L. COPPA JANET...FLUIDIC CONTROL ASSEMBLY Howard A. Scheetz Paul L. Coppa Janet Devine Sonobond Corporation Subsidiary of Christiana Metals Corporation West... Paul L. Coppa Janet Devine fl. CONTRACT OR GRANT NUMBERS.) Contract No. DAAA21-76-C-0136 ». PERFORMING ORGANIZATION N AM t AND ADDRESS

Paul of Tarsus: The Ancient Model of "Parrhesia" or Freedom of Speech.

ERIC Educational Resources Information Center

Keefe, Carolyn

The word "parrhesia" is of Greek origin and indicates the right to say anything a person chooses. The Apostle Paul was himself an operational definition of parrhesia, and a term that symbolizes such a controlling force on such a significant figure is worthy of examination and academic study. For Paul, his work as an evangelist and pastor was a…

A simulation study for determination of refractive index dispersion of dielectric film from reflectance spectrum by using Paul wavelet

NASA Astrophysics Data System (ADS)

Tiryaki, Erhan; Coşkun, Emre; Kocahan, Özlem; Özder, Serhat

2017-02-01

In this work, the Continuous Wavelet Transform (CWT) with Paul wavelet was improved as a tool for determination of refractive index dispersion of dielectric film by using the reflectance spectrum of the film. The reflectance spectrum was generated theoretically in the range of 0.8333 - 3.3333 μm wavenumber and it was analyzed with presented method. Obtained refractive index determined from various resolution of Paul wavelet were compared with the input values, and the importance of the tunable resolution with Paul wavelet was discussed briefly. The noise immunity and uncertainty of the method was also studied.

Differences in Trabecular Microstructure Between Black and White Women Assessed by Individual Trabecular Segmentation Analysis of HR-pQCT Images

PubMed Central

Putman, Melissa S; Yu, Elaine W; Lin, David; Darakananda, Karin; Finkelstein, Joel S; Bouxsein, Mary L

2017-01-01

Black women have lower fracture risk compared with white women, which may be partly explained by improved volumetric bone mineral density (vBMD) and bone microarchitecture primarily within the cortical bone compartment. To determine if there are differences in trabecular microstructure, connectivity, and alignment according to race/ethnicity, we performed individual trabecular segmentation (ITS) analyses on high-resolution peripheral quantitative computed tomography (HR-pQCT) scans of the distal radius and tibia in 273 peri- and postmenopausal black (n = 100) and white (n = 173) women participating in the Study of Women’s Health Across the Nation in Boston. Unadjusted analyses showed that black women had greater trabecular plate volume fraction, plate thickness, plate number density, and plate surface area along with greater axial alignment of trabeculae, whereas white women had greater trabecular rod tissue fraction (p < 0.05 for all). Adjustment for clinical covariates augmented these race/ethnicity-related differences in plates and rods, such that white women had greater trabecular rod number density and rod-rod connectivity, whereas black women continued to have superior plate structural characteristics and axial alignment (p < 0.05 for all). These differences remained significant after adjustment for hip BMD and trabecular vBMD. In conclusion, black women had more plate-like trabecular morphology and higher axial alignment of trabeculae, whereas white women had more rod-like trabeculae. These differences may contribute to the improved bone strength and lower fracture risk observed in black women. PMID:27958659

Synthesis of Thermoresponsive Amphiphilic Polyurethane Gel as a New Cell Printing Material near Body Temperature.

PubMed

Tsai, Yi-Chun; Li, Suming; Hu, Shiaw-Guang; Chang, Wen-Chi; Jeng, U-Ser; Hsu, Shan-hui

2015-12-23

Waterborne polyurethane (PU) based on poly(ε-caprolactone) (PCL) diol and a second oligodiol containing amphiphilic blocks was synthesized in this study. The microstructure was characterized by dynamic light scattering (DLS), small-angle X-ray scattering (SAXS), and rheological measurement of the PU dispersion. The surface hydrophilicity measurement, infrared spectroscopy, wide-angle X-ray diffraction, mechanical and thermal analyses were conducted in solid state. It was observed that the presence of a small amount of amphiphilic blocks in the soft segment resulted in significant changes in microstructure. When 90 mol % PCL diol and 10 mol % amphiphilic blocks of poly(l-lactide)-poly(ethylene oxide) (PLLA-PEO) diol were used as the soft segment, the synthesized PU had a water contact angle of ∼24° and degree of crystallinity of ∼14%. The dispersion had a low viscosity below room temperature. As the temperature was raised to body temperature (37 °C), the dispersion rapidly (∼170 s) underwent sol-gel transition with excellent gel modulus (G' ≈ 6.5 kPa) in 20 min. PU dispersions with a solid content of 25-30% could be easily mixed with cells in sol state, extruded by a 3D printer, and deposited layer by layer as a gel. Cells remained alive and proliferating in the printed hydrogel scaffold. We expect that the development of novel thermoresponsive PU system can be used as smart injectable hydrogel and applied as a new type of bio-3D printing ink.

Ancestral synteny shared between distantly-related plant species from the asterid (Coffea canephora and Solanum Sp.) and rosid (Vitis vinifera) clades

PubMed Central

2012-01-01

Background Coffee trees (Rubiaceae) and tomato (Solanaceae) belong to the Asterid clade, while grapevine (Vitaceae) belongs to the Rosid clade. Coffee and tomato separated from grapevine 125 million years ago, while coffee and tomato diverged 83-89 million years ago. These long periods of divergent evolution should have permitted the genomes to reorganize significantly. So far, very few comparative mappings have been performed between very distantly related species belonging to different clades. We report the first multiple comparison between species from Asterid and Rosid clades, to examine both macro-and microsynteny relationships. Results Thanks to a set of 867 COSII markers, macrosynteny was detected between coffee, tomato and grapevine. While coffee and tomato genomes share 318 orthologous markers and 27 conserved syntenic segments (CSSs), coffee and grapevine also share a similar number of syntenic markers and CSSs: 299 and 29 respectively. Despite large genome macrostructure reorganization, several large chromosome segments showed outstanding macrosynteny shedding new insights into chromosome evolution between Asterids and Rosids. We also analyzed a sequence of 174 kb containing the ovate gene, conserved in a syntenic block between coffee, tomato and grapevine that showed a high-level of microstructure conservation. A higher level of conservation was observed between coffee and grapevine, both woody and long life-cycle plants, than between coffee and tomato. Out of 16 coffee genes of this syntenic segment, 7 and 14 showed complete synteny between coffee and tomato or grapevine, respectively. Conclusions These results show that significant conservation is found between distantly related species from the Asterid (Coffea canephora and Solanum sp.) and Rosid (Vitis vinifera) clades, at the genome macrostructure and microstructure levels. At the ovate locus, conservation did not decline in relation to increasing phylogenetic distance, suggesting that the time factor alone does not explain divergences. Our results are considerably useful for syntenic studies between supposedly remote species for the isolation of important genes for agronomy. PMID:22433423

Diffusion tensor image segmentation of the cerebrum provides a single measure of cerebral small vessel disease severity related to cognitive change.

PubMed

Williams, Owen A; Zeestraten, Eva A; Benjamin, Philip; Lambert, Christian; Lawrence, Andrew J; Mackinnon, Andrew D; Morris, Robin G; Markus, Hugh S; Charlton, Rebecca A; Barrick, Thomas R

2017-01-01

Cerebral small vessel disease (SVD) is the primary cause of vascular cognitive impairment and is associated with decline in executive function (EF) and information processing speed (IPS). Imaging biomarkers are needed that can monitor and identify individuals at risk of severe cognitive decline. Recently there has been interest in combining several magnetic resonance imaging (MRI) markers of SVD into a unitary score to describe disease severity. Here we apply a diffusion tensor image (DTI) segmentation technique (DSEG) to describe SVD related changes in a single unitary score across the whole cerebrum, to investigate its relationship with cognitive change over a three-year period. 98 patients (aged 43-89) with SVD underwent annual MRI scanning and cognitive testing for up to three years. DSEG provides a vector of 16 discrete segments describing brain microstructure of healthy and/or damaged tissue. By calculating the scalar product of each DSEG vector in reference to that of a healthy ageing control we generate an angular measure (DSEG θ ) describing the patients' brain tissue microstructural similarity to a disease free model of a healthy ageing brain. Conventional MRI markers of SVD brain change were also assessed including white matter hyperintensities, cerebral atrophy, incident lacunes, cerebral-microbleeds, and white matter microstructural damage measured by DTI histogram parameters. The impact of brain change on cognition was explored using linear mixed-effects models. Post-hoc sample size analysis was used to assess the viability of DSEG θ as a tool for clinical trials. Changes in brain structure described by DSEG θ were related to change in EF and IPS ( p  < 0.001) and remained significant in multivariate models including other MRI markers of SVD as well as age, gender and premorbid IQ. Of the conventional markers, presence of new lacunes was the only marker to remain a significant predictor of change in EF and IPS in the multivariate models ( p  = 0.002). Change in DSEG θ was also related to change in all other MRI markers ( p  < 0.017), suggesting it may be used as a surrogate marker of SVD damage across the cerebrum. Sample size estimates indicated that fewer patients would be required to detect treatment effects using DSEG θ compared to conventional MRI and DTI markers of SVD severity. DSEG θ is a powerful tool for characterising subtle brain change in SVD that has a negative impact on cognition and remains a significant predictor of cognitive change when other MRI markers of brain change are accounted for. DSEG provides an automatic segmentation of the whole cerebrum that is sensitive to a range of SVD related structural changes and successfully predicts cognitive change. Power analysis shows DSEG θ has potential as a monitoring tool in clinical trials. As such it may provide a marker of SVD severity from a single imaging modality (i.e. DTIs).

29. Photocopy of photograph dated 1930; photographer unknown; original filed ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

29. Photocopy of photograph dated 1930; photographer unknown; original filed as HE17/p7 in Audio-Visual Collection of Minnesota Historical Society, St. Paul; HANGAR AREA, INTERIOR, SHOWING LONGITUDINAL 'CARRYING' TRUSS AND CANTILEVERED SECTION OF ROOF TRUSSES; LOOKING NORTHWEST FROM SOUTHEAST FRONT CORNER - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

Wave Propagation Problems in Certain Elastic Anisotropic Half Spaces.

DTIC Science & Technology

1980-12-01

874-882. 33. Paul , S.L., and Robinson, A.R., "Interaction of Plane Elastic Waves with a Cylindrical Cavity," Technical Documentary Report Mo. RTD...Professor Paul M. Naghdi University of California Department of Mechanical Engineering Berkeley, California 94720 Professor A. J. Durelli Oakland...Burt Paul University of Pennsylvania Towne School of Civil and Mechanical Engineering Philadelphia, Pennsylvania 19104 Professor H. W. Liu Syracuse

16TH Annual Review of Progress in Applied Computational Electromagnetics of the Naval Postgraduate School, Monterey, CA. Volume I

DTIC Science & Technology

2000-03-24

Element Method for Designing Plasma Reactors" Leo Kempel, Paul Rummel, Tim Grotjohn and John Amrhein ............................................ 28...34Finite Element Method for Designing Plasma Reactors" Leo Kempel, Paul Rummel, Tim Grotjohn and John Amrhein...548 "lime-Domain Simulation of Electromagnetic Wave Propagation in a Magnetized Plasma" J. Paul , C. Christopoulos, and

Ontonagon Harbor Operation and Maintenance Activities. Lake Superior.

DTIC Science & Technology

1975-08-01

St. Paul, Minnesota 55101 August 1975 FINAL ENVIRONMENTAL IMPACT STATEMENT OPERATION AND MAINTENAN4CE ACTIVITIES ONTONAGON HARBDOR, MICHIGAN LAKE...SUPERIOR Responsible Office: St. Paul District, Corps of Engineers, 1135 U.S. Post Office and Custom House, St. Paul, Minnesota 55101 Telephone Number 612...Nonesuch shale is a finer siltstone containing recoverable copper deposits. Active mining is present at White Pine, 12 air miles southwest of Ontonagon

Moral Perception and Judgment and a Truly Radical Change of Social Practices: A Reply to Paul Standish's "Registers of the Religious"

ERIC Educational Resources Information Center

Smeyers, Paul

2012-01-01

This article presents the author's response to Paul Standish's "Registers of the Religious". Addressing what he calls the "global", Paul Standish starts from MacIntyre's observation that people live in a world characterized by a vocabulary of value whose purchase on life is no longer authentically experienced: "MacIntyre's diagnosis of the…

38. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

38. Photographic copy of historic construction drawing, ink on linen, February 1902 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Re- flooring and re-paving of Selby Avenue Bridge over tracks of Chicago, Milwaukee & St. Paul RY. CO. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

Validation of pore network simulations of ex-situ water distributions in a gas diffusion layer of proton exchange membrane fuel cells with X-ray tomographic images

NASA Astrophysics Data System (ADS)

Agaesse, Tristan; Lamibrac, Adrien; Büchi, Felix N.; Pauchet, Joel; Prat, Marc

2016-11-01

Understanding and modeling two-phase flows in the gas diffusion layer (GDL) of proton exchange membrane fuel cells are important in order to improve fuel cells performance. They are scientifically challenging because of the peculiarities of GDLs microstructures. In the present work, simulations on a pore network model are compared to X-ray tomographic images of water distributions during an ex-situ water invasion experiment. A method based on watershed segmentation was developed to extract a pore network from the 3D segmented image of the dry GDL. Pore network modeling and a full morphology model were then used to perform two-phase simulations and compared to the experimental data. The results show good agreement between experimental and simulated microscopic water distributions. Pore network extraction parameters were also benchmarked using the experimental data and results from full morphology simulations.

Houston, We Have a Podcast. Episode 41 The Space Launch System Part.1

NASA Image and Video Library

2018-04-20

Production Transcript for Ep41 The Space Launch System Part.1.mp3 Gary Jordan (Host): Houston, we have a podcast. Welcome to the official podcast of the NASA Johnson Space Center Episode 41, the Space Launch System part one. I'm Gary Jordan, and I'll be your host today. On this podcast, we bring in the experts, NASA scientists, engineers, astronauts, all to let you know the coolest information right here at NASA. So, today, we're talking about the most powerful rocket since the Saturn V moon rocket. It's called NASA's Space Launch System. So, we've got two guests from Marshall Space Flight Center in Huntsville, Alabama here with us today to tell us a little bit about the rocket, the payloads it will carry. Don't worry. We'll define what a payload is. And then, where it's going to go. Spoiler alert, it will bring people big stuff and little stuff all farther than we've ever gone before. Wait. Why did I do that? That totally ruins the, oh wait. Never mind. It doesn't ruin anything. This is a really good topic, jam packed with information. So much information that we're going to do this in two parts. This is part one. So, with us today are David Smith and Paul Bookout. David is the Vice President for Advanced Programs at Victory Solutions in Huntsville, Alabama. He has a long career in aerospace engineering and is a Subject Matter Expert on rocket architecture and how payloads fit inside the rocket. He wrote the SLS mission planner's guide which gives payload developers a general idea of the capabilities of the rocket and some technical specifications, so they can determine how their payloads might fit inside of it. He looks after some of the big payloads. Our other guest is Dr. Paul Bookout, EM-1 Secondary Payloads Integration Manager who manages integration of five CubeSats in the giant rocket as well as the avionics that will control deployment of the 13 small satellite payloads on the first mission of SLS and Orion called Exploration Mission-1, EM-1. He spends his time managing the little payloads, not much bigger than a shoebox, that goes inside of a skyscraper-sized rocket. So, we're going to be talking about just how powerful this monster rocket is, its unique capabilities, and what it will be used for, where it is in its development, its first mission with the Orion crew vehicle, and then look ahead to the future to missions to the moon, to Mars, and throughout the solar system. So, we are go for launch with Mr. David Smith and Dr. Paul Bookout for the Space Launch System Program. T minus five, four, three, two, one, zero, and liftoff of Episode 41 of Houston, We Have a Podcast. Always wanted to do that. Feel like I just ruined it. You know what? Let's just start. [ Music ] Host: T minus five second and counting. Mark. [ Music ] Host: There she goes. Host: Houston, we have a podcast. [ Music ] Host: All right. Paul and David, thanks so much for coming on the podcast today. We talked about Orion on a few episodes so far but really haven't had the privilege to talk about he giant rocket that Orion is going to be on, the SLS. And, we have you guys here from Marshall to actually talk to us about this rocket. So, thank you very much for coming on. David Smith: Sure. David Smith: Thank you for having us. Host: Our pleasure. Host: All right. Just to sort of back up, we have Paul Bookout and David Smith, so you guys want to talk a little bit about each one, so we can identify your voices. Paul Bookout: David, go ahead. David Smith: Well, sure. I'm just an engineer. My associate Dr. Bookout is a doctor. Host: Okay. David Smith: But, we both work together on trying to find innovative ways to associate payloads with the capability of SLS which is going to be the world's largest rocket. So, I kind of look at the larger payloads, and Dr. Bookout looks at maybe some of the other kind, smaller payloads that can fit in the niches that are left over. Paul Bookout: Well, thank you Vice President David. David Smith: Yes. Paul Bookout: I appreciate you talking about introducing myself. So, what we have is secondary payloads. Again, we're just trying to understand the whole utilization of SLS since it's going to be the most powerful rocket built since the Saturn V. It's going to have a lot more capability, so we want to utilize it to its fullest. Host: Okay. So, you said there's going to be, basically, we're going to utilize the rocket to its maximum potential. We got this big rocket, and we're going to test it. But, while we test it, let's put some cool stuff on it. Paul Bookout: Exactly. Host: So, let's back up and talk about just SLS. What is SLS? What is this giant rocket that we're talking about? Paul Bookout: SLS is America's rocket. It's the next NASA's launch vehicle that's going to be able to put humans back to the moon and further out into deep space. Of course, a lot of it's built on shuttle hardware heritage. The SLS rocket's made up of the solar rocket boosters, a main core, an upper stage, and then the crew Orion spacecraft with a co-manifest payload or a primary payload. And, David will talk a little bit more about that later. So, of course, this is NASA's first exploration class launch vehicle since Saturn V, so we're going to be putting humans back to the moon, out to deep space, and eventually, you know, to Mars systems. It has a very large mass lift capability and also volume, so some of these larger probes that are satellites or probes that are going to outer planets that they'll be able to arrive at their destination in just a few years instead of maybe eight to ten years. [00:05:24] You're cutting that trip down to one or two years. So, it's a lot of savings there. Host: So, that's a really important part to kind of hone in on is just the versatility of this rocket. You're talking about a giant rocket that can take people, giant payloads, faster, farther. That's pretty much the whole summary of the SLS, right? Paul Bookout: Yes. Definitely. Host: So, what's, what does it take to be human rated? So, I guess the difference between something that's not a rocket and something that is. Paul Bookout: Of course, it goes through the whole development process, starts at the beginning. You have to have safety emission assurances involved from the very beginning. Just an overview, you have to have, like redundant systems. If something goes wrong with one system, there's another system to kick in to back up to still make the vehicle safe. There's safety reviews throughout the whole process. We do additional testing, a lot more testing than other commercial launch vehicles do just to make sure that the vehicle is safe for humans. Host: That's really the main thing, right? Paul Bookout: Yeah. [00:06:33] Host: The safety. But, then, also the redundancy because I guess redundancy is cost. Redundancy is weight. So, you have to factor that into a rocket where you can just say, "Oh, if it fails, you know, with the primary systems, it fails." But, at least the only thing we lose is this piece of hardware. And, not to say that that's not a bad thing, but. Paul Bookout: Right. Host: It's very different from human life. So, I guess, absolutely, you need to be considerate of that. Paul Bookout: Right. And, there is a tradeoff, as you was saying. Additional systems, more mass, and that's mass that is being taken away from your primary payloads. Host: Yeah. Paul Bookout: And lift capability, but we need that to be safe. Host: You know what? I actually always wanted to ask this question, but you said primary payloads. I get this question all the time from folks not in NASA, and it's just, we use this term all the time, but what, to you, is a payload? [00:07:22] Paul Bookout: A payload is anything that goes up on top of the rocket that's lifted into space. It can be a satellite. I can be probes. Of course, the Orion spacecraft, once it's on the rocket, it can have its own second co-manifested payload along with it. So, just anything, really, that's launched into space. Host: Does a person count as a payload. Paul Bookout: We don't like to refer to. [ Laughter ] Host: It doesn't humanize it as much, right? Paul Bookout: No, it doesn't. No. Host: So, I guess, for example, going back to that co-manifest thing, the Orion. The Orion would be the payload. That would be the primary thing that you want to bring into orbit. Paul Bookout: Correct. Host: But, then, there's something that is, something called co-manifested which means it's not the primary thing, but it's also part of the part that you want to lift the mission. Paul Bookout: Correct. Host: Okay. Paul Bookout: For example, on the second generation of the SLS rocket, it will have capability of launching a co-manifest payload along with Orion, and it could be anywhere from additional probe going out into the moon, or it can be call separation bus, propulsion system that's launched. And, then, when a habitat is launched, then they can be combined and go to the moon. So, it's, allows us to build capabilities out in space, too, with co-manifested payloads. Host: Okay. Paul Bookout: Along with Orion. Host: Is that one of the things you're working on? Or, you're working on, I guess, secondary payload? Paul Bookout: Yes. I'm mainly focused in on secondary payloads. Host: So, what's secondary payloads? Paul Bookout: Okay. Secondary payloads, or they call auxiliary payloads. Host: Okay. Paul Bookout: They're payloads that do not drive the primary mission of the, of that launch. For example, on EM-1, we have secondary payloads on that. That's EM-1, Exploration Mission-1. Host: Okay. Paul Bookout: First launch of SLS rocket. David Smith: Yeah. Paul Bookout: We have 13 payloads on that, and I'll talk a little bit more about that later. But, the primary requirements they have is for secondary payloads in general is do no harm to the vehicle and minimal impact. So, the do no harm aspect is that we have to fly safe. The whole system, deployment system and everything, is designed to be safe. Like, all the CubeSats are turned off during launch. They have to have, like, redundant systems, as in two separation switches that allow them to turn on. Because, if one fails while we're being launched, it could turn on the systems. So, we have two there. Host: Oh, okay. Paul Bookout: To back that up, to keep it safe. And then, minimal requirements, of course, if the rocket is ready to launch and the secondary payload's not ready yet, it's going to launch. Because it does not affect the primary mission of the payload, of the launch. Host: Right. Paul Bookout: Of that. Host: Well, that puts a lot of constraints on you, then, huh? Paul Bookout: Yes, yes it does. Host: Because, not only do you have to worry about these, and I guess we can kind of hone in on the CubeSats a little bit later. But, you have to worry about the CubeSats, but now you have to add something else to it. Now, you have to add these redundant systems. And then, there's no guarantee that if you're not ready, that's okay. We're going to go without you. Paul Bookout: Right. Exactly. SLS is, the first rocket's not going to be the only configuration of SLS. And, of course, SLS is Space Launch System. We, the first launch is going to be called Block 1. Then, we're going to be stepping up to Block 1B which means we're going to be adding a different upper stage. Right now, we're utilizing an existing Boeing ULA upper stage to use on this mission, mainly to save initial money so we can develop the core stage. And, once the core stage has been developed, then we can have additional funds to start developing the new upper stage or exploration upper stage. Host: Okay. Paul Bookout: Okay? And, that's going to be the Block 1B configuration. And, Block 1B will have actually two configurations. It'll be a crew which was, as we talked about before, the Orion spacecraft with a co-manifested payload. The other configuration will be the Block 1B cargo where that would be your primary payloads. So, the only payload will be that major payload. Host: Okay. So, when you say "Block", you're looking at the entire rocket configuration. Paul Bookout: Correct. Host: And, Block 1 is this configuration with the ULE booster, right? Paul Bookout: Right. Host: Okay. And then, Block 1B has the NASA booster on top. Paul Bookout: Correct. Host: Instead of the ULA, but then you can do crew or cargo on that one. Paul Bookout: Exactly. Host: Whereas, EM-1 you don't, and EM-1, we can get into this later, is, you're not going to have crew on it, right? That's not part of the test. That's for one of the later missions. Paul Bookout: Correct. Host: I see. So, really, the blocks are kind of the stages of developing the rocket into its full capability of. Paul Bookout: Right. Host: Of this eventual Mars lander. That's awesome. So, now, you're using these commercial elements. You're using ULA in Block 1 and the leftover solid rocket boosters until, eventually, 1B, 1B crew, you get to Block 2. Now, you have the configuration. New boosters. You got the NASA upper stage. You got all of these configurations, and now you can go to, where can you go? David Smith: Well. Host: Is it just to Mars? David Smith: Well, you really need Block 2, ultimately, to fulfill a human settlement on the lunar surface as well. Host: Really? David Smith: You need a kind of lift capability. But, if you want to assemble an architecture, because it'll take multiple flights of a Block 2 to assemble a human architecture capable of transiting to Mars, you'll need four to five Block 2 flights at a time to assemble that stack that can go to Mars. Host: So, what's, I guess, how much more power does Block 2 provide you that, I guess, Block 1B would not? David Smith: Well, it nominally, you're talking another 25 tons or so. So, it could bring a second Orion vehicle in comparison because Orion weighs about 25 tons. So, it, really, from a lift standpoint, is maybe a fifth more powerful than the Block 1B, and it gives you that extra diameter, potentially for the payload ferrying that would allow, you know, the smaller the diameter of the ferrying, the taller a lander needs to be. And, think about a lander on the surface of the moon or Mars, if it's three or four stories, that's a lot of vertical height an astronaut has to overcome every time they're taking stuff back and forth. Host: That's right. David Smith: So, we're, the larger the diameter, the shorter can be the squatter, can be the easier it is to manipulate items on and off a lander. Whether it's on the moon or Mars. Host: Okay. Wow. So, then, you're talking about once this Block 2 configuration is done with the new solid rocket boosters, you can actually have a wider payload go on top of the rocket. David Smith: Right. Well, there's a nuclear thermal propulsion that's out there that has the potential of getting people to Mars a lot sooner. It needs a much larger diameter because it used hydrogen as a fuel. Hydrogen is very bulky because it isn't very dense. And so, if we were ever to use a new kind of propulsion that would lower the time to get to Mars, you need a Block 2 vehicle. A smaller rocket will never allow you to do nuclear thermal propulsion. Host: Okay. Let's go back to some of these other configurations. I kind of want to get a sense of the look and feel of this rocket. We sort of talked about it, but to just sort of go into detail. If I was looking at let's just say the Block 1 configuration, the one that's actually going to go for EM-1, what does that look like? How tall is it? What's the weight of it? How much power? David Smith: Right. So, roughly Block 1 and 1B are somewhat similar. Host: Okay. David Smith: They're going to be about the same height as the Saturn V. Host: Oh. David Smith: Which means it's a big rocket, but part of that's because we can't really exceed the vehicle assembly building limitations that are at the Cape. So, you want to make it as big as you can, so you can put as much fuel in it as you can. Basically, the thrust of the Block 1 vehicle which is similar to the Block 1B for the solid rocket motors is about 3.6 million pounds each. Those only fly for about two minutes. Then, you have the core engines. There's four space shuttle era type SSMEs that each have about 512,000 pounds of thrust. You multiply that by four. They operate for about eight minutes. Together, you get about a total thrust of about 8.8 million pounds which gives you an escape velocity of over 22,000 miles an hour. The core stage itself is about 2/3 the length of a football field which is pretty tremendous. One single stage of this vehicle's about 2/3 of a football stadium. And, which is around 212 feet, and the Block 1B ferrying that we talked about, the 8.4-meter diameter ferrying, could accommodate up to three school buses inside its volume. So, that's pretty incredible when you think about the size of what can be lofted in a single vehicle like that. In comparison, the Block 1 vehicle, you know, can throw 70 tons to lower earth orbit where the shuttle can only do 28 tons to low earth orbit. So, it's about three times more powerful than the shuttle. Host: Wow. So, you're talking, you're comparing it to the Saturn V in terms of its size but talking about these efficient engines. What makes, what is it about the engines that's more efficient that's giving you this extra power? David Smith: Well, they, you know, the shuttle engines were rated at 100% thrust originally, and I think they got them up to 109%. So, they actually got them to work 9% more efficiently at the end of the shuttle program. We're taking these up to 11% more thrust, and maybe even 13% more thrust. So, you're really pushing these engines to their limit, and the, it's really coupling their efficiency now at 113% thrust with the reliability of the shuttle system. Host: Unbelievable. The engine itself is called an RS25, right? Paul Bookout: Yes. Host: That's what it's called. And, these are the engines that were on the shuttle. Now, you're pretty much just putting it on the SLS, but it sounds like there's a good reason for that. It's because you've flown the shuttle so many times, improved the capability of it past its, like, total 100% thrust ratio. Now, you're going, you're going past the 100%. So, basically, is like why would we, why would we do something else? We worked so hard on this one. This one is, like, extremely efficient. Why would we, and we can make it even more efficient. That's the logic behind it? Paul Bookout: Well, right. Initially, of course, we have about, I believe, 16 space shuttle main engines or these RS25s left over from the shuttle program. So, we're utilizing the existing hardware to save cost while we're developing the core stage. You know, the first part of the SLS. Host: Yeah. Paul Bookout: And, as you mentioned, we are updating the engines, getting more capability out of them. So, to that point, we can do four per, so we can do about four launches, four rocket, or four engines on each launch. So, we can do about four launches with the current RS25s. Host: Okay. And, that, is that for one of the later configurations? Paul Bookout: That's correct. Host: Okay. Paul Bookout: Yeah. Host: Is it the Block 2? Paul Bookout: The Block 2. Host: Block 2? Paul Bookout: Block 2 and beyond. Host: Oh, okay. I see. I see where the whole idea of staging this whole thing comes from, right? Paul Bookout: Correct. Host: You've got, you're using the leftover solid rocket boosters, and you're using this commercial upper stage. And, it's just basically getting to this point where you're going to maximize the efficiency of the rocket. Paul Bookout: Right. Host: Unbelievable. So, three school buses inside of the 1B configuration, right? That's, is it about the weight of three school buses? Is like taking three school buses to space? David Smith: No, it would be, it would be more than that. Host: More than that? David Smith: I mean, nominally, if you went to the moon, we're going to take, the Block 1B could take roughly 40 tons to lunar vicinity which is, which is pretty incredible. Host: Wow, and just in terms of not only, like, quantity, you're talking three school buses. But, also size. David Smith: Yeah, and mass. Host: Also weight. David Smith: Right. Host: You know, you got all of these, all these different components. So, I guess we can kind of focus in on now that we kind of understand the rocket and the evolution of the rocket, let's go to that first, that first test flight, EM-1. We've talked about EM-1 on the podcast before, especially from testing Orion and that. But, really haven't focused in on what is it about, what is it about EM-1 that we're testing SLS for? So, let's start with that. What are we going to test, and I guess we can kind of start with the overview of EM-1 for those who haven't listened to it before. Paul Bookout: Right. So, EM-1 is, of course, going to be the first launch of the SLS rocket. Its primary segments are, of course, solid rocket motors which are a heritage from shuttle hardware. Shuttle had four segments, where EM-1 is going to have five segment motors. Then, of course, the core stage which is heritage off the shuttle external tank but made longer for additional capability of fuel. And, we're also using the main engines from the shuttle program with updated technology and ratings to get more power out of those four rockets on there. So, that makes up the primary lift capability of the SLS rocket. On top of that, we have an interim cryogenic propulsion stage, which, or second stage, upper stage, that we're utilizing from Boeing, existing hardware for EM-1 mission. And then, of course, in addition to adaptors, then there will be the Orion spacecraft, which is the primary mission of EM-1 is to test out the SLS rocket. Then, also, to test out the Orion spacecraft with its trajectory and telemetries and communications. It's going to be on about a 25 1/2 day mission to distant retrograde orbit. That really means just go way past the moon and come back. Host: Yeah. Paul Bookout: You know, a 25 1/2 day trip. Of course, and, you know, we're doing all this because, again, for the safety aspects. We want to test the vehicle out and Orion spacecraft before we put humans in it. Host: Right. Paul Bookout: So, we want to make sure it's safe, make sure everything works. And, that's that safety aspect, that human rated part of a launch vehicle. Host: So, the human rated part is the Orion can go to 25.5 days, or is this going past what it's expected to possibly operate at? David Smith: I think that's a nominal timeframe for the Orion with crew. So, this is pretty much, I think, its extreme capability. Host: Yeah. David Smith: But, you know, part of it is testing just the systems period. You always, for human rating, you always want to test it far in, you know, far from what the humans will actually experience so that you have a safety factor that's sufficient for human use. Host: Oh, yeah. Because if you're going to be operating on, say, 16 day missions, you don't really want to, okay. Well, let's just test 16. Paul Bookout: Exactly. Host: You really want to go kind of further out and see, all right. Let's see how far this puppy can go. David Smith: And, I think part of this mission's objective is to bring it in at a lunar return velocity to test that heat shield. Host: Yeah. David Smith: You can't do it from low earth orbit. You got to kind of go out and bring it in fast, so. Host: So, what's the difference with EFT-1? That was one of the first test flights we did where we didn't go all the way out to the moon, but we did kind of a, this large apogee so that we can get up to, I think it was some, like 25,000 miles. Or, maybe it was a little slower than that. The difference is between EFT-1 and EM-1. David Smith: I think, I think it was very close to what they would experience in a lunar return, but it's not the actual lunar return. Host: I see. David Smith: Right, so you want to be able to stage it. You want to go out in orbit. You want to test the time that you're out in orbit. That was a very short mission, maybe five or six hours. Now, we're talking 25 days. Well, all the equipment still work when it's, you know, soaked in a cold temperature, hot temperature, all those days. And, now, you're coming in. Will it all work when it comes to the right moment. So, this really puts the pedal to the metal. Host: That's right. So, what is it? I guess the relationship between what are you guys looking at for SLS versus Orion on this particular mission, EM-1? Paul Bookout: So, for SLS, again, we want to test all the systems, make sure they're fully functional. We'll be checking out redundant systems indirectly, of course. And, communications with the vehicle, since it's the first time the vehicle's being launched. We're all, we're talking with the vehicle all the way up. Host: Yeah. Paul Bookout: So, we want to make sure all those ground systems are ready to support, actually, human flight mission. So, it's just not the vehicle. It's the overall architecture of everything that goes into supporting a launch that we want to verify and check out. Host: Oh, that's right. Now, we're preparing to go into fly deep space missions. So, not only is it, all right, let's test the hardware, but let's test to operational aspect. Paul Bookout: Exactly. Host: Let's test what it's going to take to actually do these missions from the broadest perspective possible. David Smith: And, that includes, even, just bringing the, you know, the pieces are being built all over the place. Host: Yeah. David Smith: And, tested all over the place. So, just bringing them together at the cape and making sure they can be integrated in a safe and timely fashion for launch. That, in itself, is a really important objective. We're talking about such a large rocket. Paul Bookout: Yeah, so this is the first time all those components going to be coming together, and there's going to be hiccups along the way. And, we just need to understand how this vehicle goes together and make sure we do it correctly. Host: So, you say the vehicle's going to be talking to you guys throughout its flight. What is it going to be telling you? What kinds of data are you really looking for that's really going to tell you that this thing is working how we're expecting it to work? David Smith: Well, remember, you're talking to payload guys, so, you know, we're more interested in seeing what the payload's going to experience. Host: Yeah. David Smith: But, think about this. When it launches on the pad, it has an incredible noise issue coming off that mobile launch platform. That's why, if you remember, they had these things called rainbirds, the big sprinklers that start spraying as soon as the engines go to try to mitigate that noise. Host: Right. David Smith: The payload is particularly sensitive to it. Obviously, the vehicle itself is sensitive to that noise as well. So, acoustic mitigation is one of the most important things at launch. Then, we have a thermal issue, right? We go up to max Q, max dynamic pressure. We have a certain heating that is, occurs on the outside of the vehicle. And, before, we got to get through all that heating before we can make sure that the crew is going to be safe, that we can take the shielding off the Orion and so forth. So, we're going to be testing all those environmental concerns as we go forward, and of course, the jettisoning of, you know, the SRBs off the core stage. Then, the ICPS in Orion off the core stage. And then, of course, then, the Orion off the ICPS. All these jettison events, and there's quite a few of them, are extremely important, and we need to test those. Each one has its associated thermal and acoustic issues. So, we're going to test each one of those as it goes forward. Paul Bookout: Since this is the first launch of SLS rocket, we don't really understand the full environments that it's going to be launched in. As David mentioned, the thermal, interior thermal, acoustic, vibration. It's the first time we're going to launch it. So, what we're also have is a lot of instrumentation on this vehicle to be able to measure the actual vibration levels and everything else. So, we can, once we go back to designing and looking at what we call safety factors, reducing those so we can have more margin on the vehicle and means that goes into more mass lift capabilities. So, we're trying to understand the overall characteristics of the vehicle itself. So, in addition, for secondary payload, or payloads in general, we can give them more of an accurate environment that they will see during launch. As in, how much vibration they'll feel, how much thermal environments that they'll see. So, when they start designing their payloads for, to run the ride on this vehicle, they can have more of an accurate environment. And, maybe not have, make it a lot more efficient design. Host: Okay. So, then, what data are you going off of now based on, you guess you haven't launched the SLS. So, what are you assuming, or where are you getting the data from? David Smith: We have, we started off with assuming, at least for the payloads, that we would provide an ELV, and expendable launch vehicle class environment. Host: Okay. David Smith: So, if you've flown on Atlas or Delta, you should expect nothing worse than that. Host: Okay. David Smith: That's our starting point. Host: Oh, okay. David Smith: Now, what Paul's going into is we're going to try to characterize is that really true? So, the first flight's important. Are we in? Are we out? What do we have to do? Is there more foam that you got to put in the payload section to mitigate the noise? That's what we're trying to figure out. But, we should be within an ELV class is what we're projecting right now. Host: Okay. So, then, I'm assuming you're going to have some actual science on board EM-1, right? Because you're testing, you're testing the structure of EM-1. You're testing the rocket. But then, you have this mission. Why not take advantage of it? Is there anything else going on the EM-1? Paul Bookout: Oh, definitely. Host: Okay, good. Paul Bookout: Yes. We have, we'll have 13 secondary payloads that we're going to be launching on EM-1. Host: Wow. Paul Bookout: That'll, that is located in the Orion stage adapter. That's the segment that connects the SLS rocket to the Orion spacecraft. So, it's a small ring about five feet high. About 18 or so feet in diameter. And, along the inner circumference of that is where we are mounting these 13 secondary payloads. Host: Oh, so I guess they have to be kind of small, right? That's not a lot of space compared to the, what's in the ferrying. Paul Bookout: Correct. So, on EM-1, we have 13 CubeSats. CubeSats are defined as a, we call a 1U, which is about ten by ten by ten-centimeter cube. Host: Okay. Paul Bookout: So, what we're having on EM-1 is allowing them to go up to what we call a 6U. So, it's a CubeSat that's about the, a little bit larger than the size of a shoebox, a large shoebox. Host: Okay. Paul Bookout: And, that's kind of the dimensions of these 6U CubeSats that we're having on EM-1. David Smith: Which is the most common CubeSat, really, today, right? Paul Bookout: Correct. Exactly. So, we have multiple missions that these payloads are going to be doing. So, we've got one destination is to the moon. We have Lunar Flashlight which is out of Jet Propulsion Laboratory, and their primary mission is to search for ice deposits and resources on the moon using a laser. Host: Ooh. Paul Bookout: Okay. And, the second one is Lunar IceCube which is Morehead State University up in Kentucky. And, they're going to also be searching for water of all forms and volatiles on the moon using infrared spectrometer. These are some big words that I can't even define, so. [ Laughter ] LunaH-Map is from Arizona State University, and they're going to be creating high fidelity map of near surface hydrogen in craters on the moon. Lunar IR is from Lockheed Martin in Colorado, and they're going to be performing advanced infrared imagery of lunar surface. We've got one that's going to the sun facility, and it's called CuSP. It's from Southwest Research Institute here in Texas, and it's going to be measuring particles and magnetic fields of space weather between us and the sun. We have one that's going around the Earth. It's called EQUULEUS. It's a Japanese payload, and we actually have three international payloads on this mission. And, I'll touch on those others. Host: Awesome. Paul Bookout: So, again, EQUULEUS is from JAXA. It's the University of Tokyo supporting that. I mean, it's imaging the Earth's plasma sphere for a better understanding of Earth radiation environment. And also, it's going to be initially on the far side of the moon and detecting any meteor crater flashes that may impact the far side of the moon. Host: Wow. Paul Bookout: So, they'll be out there for about two months or so and just hopefully they'll be able to catch something. Some of the other missions are BioSentinel. It's from Ames Research Center, and they're going to be using baker's yeast to see the effects of radiation on actual live items, you know, live yeast. And, then, ArgoMoon, which is the European Space Agency, is built in Italy. It's going to be observing the interim cryogenic propulsion stage. That's upper stage is going to be deployed. Look at that upper stage, and then it's going to go on some additional missions. And, it's going to look at the upper stage to see what kind of effects the environment has during liftoff on the upper stage. Because, until now, we, once the upper stage is launched, we usually don't get a chance to look the conditions of that. This will give us some feedback and see what the upper stage has went through, if there's any damage or anything. Host: It sounds like these CubeSats are all over the place. Paul Bookout: Yes. Yeah. I've got a couple more here. Host: Oh, really. Paul Bookout: I haven't got to my two favorite yet. So. Host: Oh, we're standing by. Paul Bookout: Okay. Centennial Challenge. That was a challenge that NASA set up called Cube Quest, and it's to help develop communications for these smaller CubeSats. There's two challenges. One was a lunar challenge to around the lunar surface and for longevity. And, the other one was a deep space mission which was a CubeSat, as it says, going out into deep space to see how far and long and what burst rates and clarity that you can have in your signals. So, there's total prizes for everything through all the development and final missions. It's up to $5 million. Host: Wow. Paul Bookout: So, that's a lot of money. Host: Yeah. Paul Bookout: Spread out over those. So, you did, you asked what my two favorite payloads are. Host: Oh, yeah. Paul Bookout: Let me tell you. One of them is NEA Scout. That's developed at Marshall Spaceflight Center. What's unique about that is NEA Scout means Near Earth Asteroid. So, they're going to be going to a near earth asteroid. But, the exciting thing about it is that they're going to be using solar cell to get there for their propulsion system. So, this is the first time a solar cell will be used to, for propulsion out into deep space. There have been other missions in low earth orbit to check out the technology and feasibility of solar cells, but this is the first time going out to deep space. And, for a CubeSat that's a little bit larger than a shoebox, it will be deploying the cell that will be 40 by 40 feet. Host: Whoa. Paul Bookout: So, that's huge. Host: Wait, and a little CubeSat. Paul Bookout: In a little CubeSat. Host: And, it deploys a 40 foot. Paul Bookout: Yes. Host: Oh, wow. Paul Bookout: Yeah, so that solar cell is very thin material. Host: Yeah. It must be to fold up into, like, this ten-centimeter cube thing. Paul Bookout: Exactly. Host: So, so, the solar. Paul Bookout: You said ten centimeters. 6U CubeSat is 10 by 20 by 30. Host: Oh, because this is 6U. Paul Bookout: 6U, correct. Host: Oh, okay. Okay. Okay. So, solar sails, though, this is, it basically unfurls this 40-foot sail, and is it the one where the high-power laser that pushes it? Paul Bookout: No. Paul Bookout: That's different. Paul Bookout: This is going to ride the solar winds. Paul Bookout: Ride the solar winds. Paul Bookout: Solar particles will be pushing it along. It'll do actually a fly by the near-earth asteroid as it comes up. It'll be taking images all the way around as it passes. Host: Okay. Wow. Paul Bookout: So, and my ultimate favorite one is. Host: Yeah, we didn't get the last one. Paul Bookout: Is actually the one that I'm the Secondary Payload Integration Manager for. Host: Oh. Paul Bookout: So, it's one of my CubeSats. Host: So, it's an unbiased favorite, then. Paul Bookout: Yes. Host: Okay. Paul Bookout: Yeah, still. It's called OMOTENASHI. It's another Japanese CubeSat. Host: Okay. Paul Bookout: And, their mission is to land on the moon. Host: Oh. Paul Bookout: Can you imagine a small little CubeSat, you know, a little bit larger than a shoebox, land on the moon? Of course, and the big thing about it is that they're going to be using a solid rocket motor to slow down to be able to land on the moon. So, that's one of the things on EM-1 that we're offering that previous commercial launch vehicles and that don't offer propulsion systems for secondary payload to be able to utilize that. That's one thing EM-1 and SLS is allowing. So, that's a huge deal. Host: Yeah. Paul Bookout: For those. So, if OMOTENASHI is successful at landing on the moon, they'll be the fourth nation in the world to have actually land and do some science on the moon. Host: Wow. Paul Bookout: You know. Host: So, what kind of science? Paul Bookout: Well, because, again, they're still a small payload, so they can't get large science instruments to the moon, when they land, actually land on the moon, all that will be left is about the size of a sandwich box. Because they have to get rid of all the extra weight to be able to slow down enough to be able to land. And, they'll probably so some soil impact measurements, as in how soft vibration, shock, as it's landing on the moon. And, I, so, and they're only going to be able to do it for about 30 minutes or so. Again, because of the size, what we're limiting them to. Host: Yeah. Paul Bookout: They can't get the mechanics, orbital mechanics and velocities and everything. I'm sorry. Host: So, it's, it's kind of general on where you can land, then? It's just like, it's just going to land. It's not going to land in a targeted spot, I guess? Paul Bookout: Correct. They know the general vicinity where it's going to land. Host: Okay. Paul Bookout: But, they can't have ultimate control, like any of the other landers that have larger systems, propulsion systems, to slow them down. So, they would be actually, once the solar motor fires, they'll still be traveling at about 60 miles an hour when they impact the moon. So, they're going to inflate these impact balloons to actually bounce, similar to what they've done on Mars, some of the Mars Rovers. Host: Okay. Paul Bookout: So, it'll come and impact moon and bounce and then finally rest on the moon. Host: Okay. Paul Bookout: And, do about 30 minutes of impact soil measurements. Host: Wow. How would that be, though? I'm imagining, I mean, landing at 60 miles an hour. That's, you know. Paul Bookout: Well. Host: That's not slow, but at the same time, it's the moon, right? It's. Paul Bookout: Right. Yes, but then again, you're not going directly into it. You know, you're coming in at an angle, too. Host: At an angle. Paul Bookout: So, it's not a fully impact. Host: Okay. Great. Paul Bookout: Direct impact, so. Host: So, you got all these CubeSats going around the Earth, around the upper stage, around the moon, on the moon, to deep space. Where do you deploy, how does that work? Where do you deploy everything? It's not just like you just let everything go at all. It has to be pretty controlled because each one has a very specific mission. Paul Bookout: Right. We've created what we call bus stops. Host: Oh. Paul Bookout: They're basically different aspects of the trajectory of the upper stage. So, the first bus stop is when you're in between the two radiation belts or Van Allen belts. Bus stop two is when you've passed all the radiation belts. Bus stop three is half way between the Earth and the moon. Bus stop four is the closest proximity to the moon, and bus stop five is when you're going into a heliosynchronous or sun orbit. And, that's where the upper stage will be disposed into the sun orbit. So, when a payload says, "Hey, I want to get off at 200,000 miles away from the Earth." Well, okay, where is that exactly? So, that's why we kind of created these bus stops. Host: I see. Paul Bookout: They can get off anywhere they want to, but it helps us relate to the areas where they want off. So, most of them are wanting off at stop one. About seven or eight of them. Because they need to get out and start changing their trajectory as soon as possible. Again, we're offering propulsion systems, but they're not large enough to have really change their directions further on. So, a little change at first makes a big change later. Host: Yeah. Paul Bookout: So, they want to get off to be able to do that, make those little changes. Most of the payloads that are going to lunar orbit, what they're wanting to do is slow down because the ICPS, you know, is launching Orion into this distant retrograde orbit. And, you know, way past the moon. Host: Yeah. Paul Bookout: So, it has a lot of velocity heading that way, and if the payloads don't slow down, they'll just go flying past the moon. The moon can't, doesn't have enough gravity to pull them back into an orbit. And, some of them, even though they are going to the moon, they'll actually fly past the moon, and it may take a month or so for them to come back, to slow down enough to come back and get hooked into the moon's gravity and start orbiting the moon. Host: Oh, wow. Paul Bookout: So, it's not a direct flight into the moon orbit, just because they don't have the propulsion systems large enough to be able to do that. Host: So, is it fair to say they're all going to be in a very similar orbit, or are they all going to kind of go their respective directions? Paul Bookout: They're going to do their respective ways. Host: Okay. Paul Bookout: Some of them wants to do in the crater, so they're going to be going to the pole system, up to the poles to look see if there's ice up in there. And, some of them will just be doing a regular geosynchronous type of orbit. Host: Okay. Paul Bookout: Type thing. Host: All right. Paul Bookout: We talked about where these, what the payloads are and where they're going to want to get off. To be able to allow them to get off, again, we have to have a deployment system where, again, some of the primary requirements for EM-1 was or SLS is to do no harm and to have minimal impact to the vehicle. Host: Yes. Paul Bookout: Well, to do that latter one, what we've come up with a system is that we will receive an energy, the avionics unit for deploying the secondary payloads will receive an energy pulse for, from Orion. Or, I'm sorry. Will receive an energy pulse from the upper stage once Orion has already left and the upper stage has gone through its disposal maneuvers. That means burning off extra fuel and everything making it safe. Right before it shuts down, it will turn on the avionics unit for deploying the secondary payloads. Then, the upper stage turns off. So, we wake up, and we've got our own internal battery system. And, each payload is inside of a dispenser, and so, the dispenser operates as the, has a spring-loaded lid. And, the payloads inside are installed by compressing the spring. So, when the, when it's time for that particular payload to be deployed, we get an energy pulse from the avionics unit sent to the dispenser to open the door. The door flings open, and then the secondary payload is pushed out by springs. So, that's how they're deployed. Host: Okay. So, like a, so, like an SLS jack in the box. [laughter] Paul Bookout: If you will. Host: That's what I'm imagining. Obviously, it's going to shoot out. Paul Bookout: We have pulled those analogies before, but I'll let you state it. Host: And then, I guess there's, you get this power pulse that's going to, I guess, be directed to whatever seven is going to be part of bus stop one, and whatever the next ones for bus stop two. Paul Bookout: Correct. Host: Okay. Paul Bookout: And, they'll be deployed, if there's multiple at a particular bus stop, they'll be deployed a minute or two away from each other, after each other because we don't want to be able to deploy one and then deploy another one right behind it. Host: Yeah. Paul Bookout: And then, they have recontact. Host: So, I'm trying to imagine the way everything is situated in my head, and at this part of the flight when you're starting to deploy these secondary payloads, what does, what does the rocket, I guess, or what does the piece that's actually flying, what does it look like? I guess you have Orion and then there's this deployment system, and then there's, is it the upper stage behind it? Paul Bookout: Okay. So, once we've launched. Host: Yeah. Paul Bookout: After about two minutes, the solar rocket motors are. David Smith: Jettisoned. Paul Bookout: Jettisoned. And then, the core stage lifts the rest of the vehicle up into orbit. And, after that time, when the core stage is spent, then it'll be jettisoned. And then, you'll have your upper stage and your Orion spacecraft which of course the secondary payloads are still in part of that. And then, then, it'll go into what they call a translunar injection that's basically the upper stage will ignite and put Orion into its mission profile going past the moon. Host: So, at this point, right before it ignites, it's still in, I guess, Earth orbit, and the translunar injection gets it to the moon. Paul Bookout: Correct. Host: Okay. Paul Bookout: Okay. So, once the upper stage has spent its fuel, the Orion spacecraft will separate, okay? From the upper stage. So, it'll go through on to its mission. And then, about 30 minutes later, 20, 30 minutes later, the secondary payloads will start their deployment. Host: I see. Okay. Paul Bookout: So, Orion is well away and actually speeding faster away from the upper stage. Host: Yeah. Paul Bookout: The upper stage, once it goes through its disposal maneuver, is actually flying kind of, you would say, backwards, engine first, towards the moon. Host: Oh. Paul Bookout: So, the secondary payloads will be ejected out the other direction. So. Host: Okay. So, so. Paul Bookout: So, when they're deployed, the ICPS won't run back into them. Host: That's right. Paul Bookout: Okay. So, they'll be deployed in the other direction. Host: But, now, Orion is going in, it's doing its own thing. Paul Bookout: Correct. Host: Because it did its job. It delivered Orion. That's the primary payload. Now, it's off. But, the secondary payloads are still part of this upper stage. They haven't gone with Orion. They're totally separate. Paul Bookout: Correct. They have their own. Host: So, it's like, they're kind of doing, they're going. Paul Bookout: Yeah. Host: Different ways. Interesting. Paul Bookout: Yeah, they have their own mission profiles going in all different directions. Host: Okay. Okay. I don't know why that wasn't clear to me before but thank you. All right. So, I guess kind of backing up from there, you're talking about the solid rocket boosters are disposed. The core stage is disposed. Where are all these pieces going? Paul Bookout: Okay. Depending on their mission profile, all the secondary payloads are going to end of missions at different places. Some of them will be actually crashing into the moon, and that's common where the other countries and their lunar missions depositing on the moon. Some will, one or two will burn up in Earth's atmosphere as it comes back. Some of the other ones that are going out into deep space, of course, just keep going. The CuSP, which is going to solar. I'm sorry. CuSP, which is going to the sun's vicinity will just stay out there and eventually be pulled into the sun. Host: Okay. Host: So, that's all the secondary payloads. Paul Bookout: Correct. And, for each mission, each payload that's launched on U.S. rockets, they all have to have an end of mission plan. What are they going to do to end their mission, not just to be left out there as space junk. Because that's, we're having, sorry. We're starting to have a lot of problems with, as you know, there's a lot of space junk around Earth. Host: Oh, yeah. Paul Bookout: And, you don't want that same situation around other planets, too. Host: That's fair. That's fair. And, that's why, that's part of the, I mean, this is going back, but Cassini, right? That was the whole. It did its thing, and instead of just letting it be. It had a controlled entry into Saturn so that it didn't contaminate any other. Paul Bookout: Exactly. Yes. Host: Any other bodies. Yes, yes, of course. Paul Bookout: And, it doesn't matter what size you are. Host: Yeah. Paul Bookout: Even these small CubeSats have to have an end of mission. Host: Have to have an end of mission. Paul Bookout: Yes. Host: Awesome. But, I did want to go back to some of the earlier parts of the mission, right after launch. You know, you're talking about solid rocket boosters separating being. David Smith: Those go into the ocean. Host: Ocean? Okay. David Smith: Still, but they're not recovered this time. Host: Oh, okay. David Smith: You know, for shuttle, they were recovered. This time, it's too difficult. They're too large. So, they're just going to sink. Host: Okay. [00:48:19] David Smith: The external tank is, it can't go into orbit, so it's kind of lofted in such a way that it'll break up over the Indian Ocean safely. Host: Ah. David Smith: So, it's a very large tank. You know, this is much larger than the external tank of shuttle, so it's very important that it break up safely. So, that's, that's why you need the upper stage to actually bring the payload up into a circular orbit around the Earth. Otherwise, the payload would go down with the core module as well. Host: Okay. Okay. And, what about the, I guess, the upper stage. You said it's going to be doing this deployment, but then, after it deploys [inaudible]. David Smith: It's heliocentric. It goes into a sun, heliocentric disposal. Host: Sun heliocentric disposal. David Smith: So, it kind of goes away, and we should, hopefully, not see it again. Host: Okay. All right. That's a very nice summary of EM-1, and I feel like there's so much more to talk about. I kind of wanted to get into, you know, where are we now with SLS, all the history of it. So, I think we should take a break and just sort of let this one be Episode 41. We'll come back, and we'll do Episode 42 and just sort of get into the process behind building the SLS and then the journeys of where it's going to go and beyond. So, guys, thank you so much for coming on. We'll take a break. I'll see you in a few minutes. And, for everyone else, I guess we'll see you for the next episode. David Smith: All right. David Smith: Great, thank you. Look forward to it. Paul Bookout: Thank you. [ Music ] Houston, go ahead. [ Inaudible Comment ] [inaudible] for all mankind. Not because they are easy, but because they are hard. Welcome to space [echo]. Host: Hey, thanks for sticking around. So, the best places to follow development and delivery of the rocket as we test the major components and deliver it piece by piece to the Kennedy Space Center are on the social media channels on the web for the Space Launch System. So, first the website. You can go to www.nasa.gov/ guess what? SLS. That's where you can get the latest, the greatest on the Space Launch System. On Twitter, it's @nasa underscore SLS. On Facebook, it's NASASLS, that's one word. Or, this is one of the things that actually David Smith wrote. You can actually search SLS Mission Planner's Guide. And, it's a document that you can find on the web. You can download it, and it actually has a lot of great information on just the whole scope of the Space Launch System. We're really looking forward to the first launch of SLS and Orion from the Kennedy in a couple years. Sounds like we're well on our way to the pad, and we'll be launching astronauts back to the moon in just a few short years. If you have questions on SLS and its development, use the hashtag asknasa on your favorite platform. Just go to the Johnson accounts. Those are the ones we look at. The NASA Johnson Space Center accounts on Facebook, Twitter, and Instagram. You can send an idea or a question, and we'll make sure to mention it's for, or just make sure to mention it's for Houston, We Have a Podcast, and we'll bring it up in a later episode. Or, maybe address it in an entire episode. The whole episode will be dedicated to the question. Who knows? So, this podcast was recorded on March 20, 2018. Thanks to Alex Perryman, Rachel Craft, Laura Reshawn [assumed spelling], Kelly Humphries, Pat Ryan, Tyler Martin, Bev Perry, and all the folks at the Marshall Spaceflight Center for coming on to help to put this together. Thanks again to Dr. Paul Bookout and Mr. David Smith for coming on the show. We'll be back next week with part two.

Brain white matter changes associated with urological chronic pelvic pain syndrome: multisite neuroimaging from a MAPP case-control study.

PubMed

Huang, Lejian; Kutch, Jason J; Ellingson, Benjamin M; Martucci, Katherine T; Harris, Richard E; Clauw, Daniel J; Mackey, Sean; Mayer, Emeran A; Schaeffer, Anthony J; Apkarian, A Vania; Farmer, Melissa A

2016-12-01

Clinical phenotyping of urological chronic pelvic pain syndromes (UCPPSs) in men and women have focused on end organ abnormalities to identify putative clinical subtypes. Initial evidence of abnormal brain function and structure in male pelvic pain has necessitated large-scale, multisite investigations into potential UCPPS brain biomarkers. We present the first evidence of regional white matter (axonal) abnormalities in men and women with UCPPS, compared with positive (irritable bowel syndrome, IBS) and healthy controls. Epidemiological and neuroimaging data were collected from participants with UCPPS (n = 52), IBS (n = 39), and healthy sex- and age-matched controls (n = 61). White matter microstructure, measured as fractional anisotropy (FA), was examined by diffusion tensor imaging. Group differences in regional FA positively correlated with pain severity, including segments of the right corticospinal tract and right anterior thalamic radiation. Increased corticospinal FA was specific and sensitive to UCPPS, positively correlated with pain severity, and reflected sensory (not affective) features of pain. Reduced anterior thalamic radiation FA distinguished patients with IBS from those with UCPPS and controls, suggesting greater microstructural divergence from normal tract organization. Findings confirm that regional white matter abnormalities characterize UCPPS and can distinguish between visceral diagnoses, suggesting that regional axonal microstructure is either altered with ongoing pain or predisposes its development.

3D Analysis of Porosity in a Ceramic Coating Using X-ray Microscopy

NASA Astrophysics Data System (ADS)

Klement, Uta; Ekberg, Johanna; Kelly, Stephen T.

2017-02-01

Suspension plasma spraying (SPS) is a new, innovative plasma spray technique using a feedstock consisting of fine powder particles suspended in a liquid. Using SPS, ceramic coatings with columnar microstructures have been produced which are used as topcoats in thermal barrier coatings. The microstructure contains a wide pore size range consisting of inter-columnar spacings, micro-pores and nano-pores. Hence, determination of total porosity and pore size distribution is a challenge. Here, x-ray microscopy (XRM) has been applied for describing the complex pore space of the coatings because of its capability to image the (local) porosity within the coating in 3D at a resolution down to 50 nm. The possibility to quantitatively segment the analyzed volume allows analysis of both open and closed porosity. For an yttria-stabilized zirconia coating with feathery microstructure, both open and closed porosity were determined and it could be revealed that 11% of the pore volumes (1.4% of the total volume) are closed pores. The analyzed volume was reconstructed to illustrate the distribution of open and closed pores in 3D. Moreover, pore widths and pore volumes were determined. The results on the complex pore space obtained by XRM are discussed in connection with other porosimetry techniques.

Brain white matter changes associated with urological chronic pelvic pain syndrome: Multi-site neuroimaging from a MAPP case-control study

PubMed Central

Huang, Lejian; Kutch, Jason J.; Ellingson, Benjamin M.; Martucci, Katherine T.; Harris, Richard E.; Clauw, Daniel J.; Mackey, Sean; Mayer, Emeran A.; Schaeffer, Anthony J.; Apkarian, A. Vania; Farmer, Melissa A.

2016-01-01

Clinical phenotyping of urological chronic pelvic pain syndromes (UCPPS) in men and women has focused on end-organ abnormalities to identify putative clinical subtypes. Initial evidence of abnormal brain function and structure in male pelvic pain has necessitated large-scale, multi-site investigations into potential UCPPS brain biomarkers. We present the first evidence of regional white matter (axonal) abnormalities in men and women with UCPPS, compared to positive (irritable bowel syndrome, IBS) and healthy controls. Epidemiological and neuroimaging data was collected from participants with UCPPS (n=52), IBS (n=39), and healthy, sex- and age-matched controls (n=61). White matter microstructure, measured as fractional anisotropy (FA), was examined with diffusion tensor imaging (DTI). Group differences in regional FA positively correlated with pain severity, including segments of the right corticospinal tract and right anterior thalamic radiation. Increased corticospinal FA was specific and sensitive to UCPPS, positively correlated with pain severity, and reflected sensory (not affective) features of pain. Reduced anterior thalamic radiation FA distinguished IBS from UCPPS patients and controls, suggesting greater microstructural divergence from normal tract organization. Findings confirm that regional white matter abnormalities characterize UCPPS and can distinguish between visceral diagnoses, suggesting that regional axonal microstructure is either altered with ongoing pain or predisposes its development. PMID:27842046

Vitamin C supplementation and the common cold--was Linus Pauling right or wrong?

PubMed

Hemilä, H

1997-01-01

In 1970 Linus Pauling claimed that vitamin C prevents and alleviates the episodes of the common cold. Pauling was correct in concluding from trials published up till then, that in general vitamin C does have biological effects on the common cold, but he was rather over-optimistic as regards the size of benefit. His quantitative conclusions were based on a single placebo-controlled trial on schoolchildren in a skiing camp in the Swiss Alps, in which a significant decrease in common cold incidence and duration in the group administered 1 g/day of vitamin C was found. As children in a skiing camp are not a representative sample of the general population, Pauling's extrapolation to the population at large was too bold, erring as to the magnitude of the effect. Nevertheless, Pauling's general conclusion that vitamin C has physiological effects on the common cold is of major importance as it conflicts with the prevailing consensus that the only physiological effect of vitamin C on human beings is to prevent scurvy.

A Demonstration to Assess Effectiveness, Suitability, and Survivability With the Missions and Means Framework

DTIC Science & Technology

2012-12-01

A Demonstration to Assess Effectiveness, Suitability, and Survivability With the Missions and Means Framework by Beth S . Ward, Paul J...Tanenbaum, Keon U. Burley, Paul H. Deitz, Britt E. Bray, Richard S . Sandmeyer, and Jack H. Sheehan ARL-TR-6271 December 2012...Demonstration to Assess Effectiveness, Suitability, and Survivability With the Missions and Means Framework Beth S . Ward, Paul J. Tanenbaum, and Keon U

Privilege: The Making of an Adolescent Elite at St. Paul's School. Princeton Studies in Cultural Sociology

ERIC Educational Resources Information Center

Khan, Shamus Rahman

2012-01-01

As one of the most prestigious high schools in the nation, St. Paul's School in Concord, New Hampshire, has long been the exclusive domain of America's wealthiest sons. But times have changed. Today, a new elite of boys and girls is being molded at St. Paul's, one that reflects the hope of openness but also the persistence of inequality. In…

Magnetic and Structural Characterization of Fe-Ga Using Kerr Microscopy and Neutron Scattering

DTIC Science & Technology

2010-01-01

117 4.6 Schematic of triple axes single crystal neutron diffractometer (left). TriCS intrument at Paul Scherrer Institut, Switzerland (right...Therefore, USANS data is one-dimensional. 4.3.3 Single Crystal Neutron Diffraction The single crystal neutron diffractometer, TriCS at Paul Scherrer...crystal neutron diffractometer (left). TriCS intrument at Paul Scherrer Institut, Switzerland (right) [106] 4.4 Unpolarized SANS In this section, SANS

A Biophysical-Computational Perspective of Breast Cancer Pathogenesis and Treatment Response

DTIC Science & Technology

2008-03-01

or for monitoring therapy responsiveness. In addition, we recently began a fruitful collaboration with Dr. Paul Hansma from UC Santa Barbara who has...Inactivation of the apoptotic effector Apaf-1 in malignant melanoma. Nature 409, 207-211 (2001). 44. Gifford, G., Paul , J., Vasey, P.A., Kaye, S.B...clustering. Data in parenthesis are 95% confidence intervals. Tissue Diagnostic Instrument Paul Hansma, Hongmei Yu, David Schultz, Azucena Rodriguez

Changes in abundance of vascular plants under varying silvicultural systems at the Forest Ecosystem Research and Demonstration Area, Paul Smiths, New York

Treesearch

Mark J. Twery; Elizabeth Olson; Gary L. Wade; Michael. Rechlin

2013-01-01

The Forest Ecosystem Research and Demonstration Area (FERDA) was established in 1998 adjacent to the Visitor Interpretive Center (VIC) for the Adirondack Park in Paul Smiths, NY, to provide visitors with first-hand exposure to forest management activities and to provide research opportunities for scientists and students at Paul Smith's College. This research note...

Brain tumor classification using the diffusion tensor image segmentation (D-SEG) technique.

PubMed

Jones, Timothy L; Byrnes, Tiernan J; Yang, Guang; Howe, Franklyn A; Bell, B Anthony; Barrick, Thomas R

2015-03-01

There is an increasing demand for noninvasive brain tumor biomarkers to guide surgery and subsequent oncotherapy. We present a novel whole-brain diffusion tensor imaging (DTI) segmentation (D-SEG) to delineate tumor volumes of interest (VOIs) for subsequent classification of tumor type. D-SEG uses isotropic (p) and anisotropic (q) components of the diffusion tensor to segment regions with similar diffusion characteristics. DTI scans were acquired from 95 patients with low- and high-grade glioma, metastases, and meningioma and from 29 healthy subjects. D-SEG uses k-means clustering of the 2D (p,q) space to generate segments with different isotropic and anisotropic diffusion characteristics. Our results are visualized using a novel RGB color scheme incorporating p, q and T2-weighted information within each segment. The volumetric contribution of each segment to gray matter, white matter, and cerebrospinal fluid spaces was used to generate healthy tissue D-SEG spectra. Tumor VOIs were extracted using a semiautomated flood-filling technique and D-SEG spectra were computed within the VOI. Classification of tumor type using D-SEG spectra was performed using support vector machines. D-SEG was computationally fast and stable and delineated regions of healthy tissue from tumor and edema. D-SEG spectra were consistent for each tumor type, with constituent diffusion characteristics potentially reflecting regional differences in tissue microstructure. Support vector machines classified tumor type with an overall accuracy of 94.7%, providing better classification than previously reported. D-SEG presents a user-friendly, semiautomated biomarker that may provide a valuable adjunct in noninvasive brain tumor diagnosis and treatment planning. © The Author(s) 2014. Published by Oxford University Press on behalf of the Society for Neuro-Oncology.

Laser-based gluing of diamond-tipped saw blades

NASA Astrophysics Data System (ADS)

Hennigs, Christian; Lahdo, Rabi; Springer, André; Kaierle, Stefan; Hustedt, Michael; Brand, Helmut; Wloka, Richard; Zobel, Frank; Dültgen, Peter

2016-03-01

To process natural stone such as marble or granite, saw blades equipped with wear-resistant diamond grinding segments are used, typically joined to the blade by brazing. In case of damage or wear, they must be exchanged. Due to the large energy input during thermal loosening and subsequent brazing, the repair causes extended heat-affected zones with serious microstructure changes, resulting in shape distortions and disadvantageous stress distributions. Consequently, axial run-out deviations and cutting losses increase. In this work, a new near-infrared laser-based process chain is presented to overcome the deficits of conventional brazing-based repair of diamond-tipped steel saw blades. Thus, additional tensioning and straightening steps can be avoided. The process chain starts with thermal debonding of the worn grinding segments, using a continuous-wave laser to heat the segments gently and to exceed the adhesive's decomposition temperature. Afterwards, short-pulsed laser radiation removes remaining adhesive from the blade in order to achieve clean joining surfaces. The third step is roughening and activation of the joining surfaces, again using short-pulsed laser radiation. Finally, the grinding segments are glued onto the blade with a defined adhesive layer, using continuous-wave laser radiation. Here, the adhesive is heated to its curing temperature by irradiating the respective grinding segment, ensuring minimal thermal influence on the blade. For demonstration, a prototype unit was constructed to perform the different steps of the process chain on-site at the saw-blade user's facilities. This unit was used to re-equip a saw blade with a complete set of grinding segments. This saw blade was used successfully to cut different materials, amongst others granite.

Structural features of the San Andreas fault at Tejon Pass, California

NASA Astrophysics Data System (ADS)

Dewers, T. A.; Reches, Z.; Brune, J. N.

2002-12-01

We mapped a 2 km belt along the San Andreas fault (SAF) in the Tejon Pass area where road cuts provide fresh exposures of the fault zone and surrounding rocks. Our 1:2,000 structural mapping is focused on analysis of faulting processes and is complementary to regional mapping at 1:12,000 scale by Ramirez (M.Sc., UC Santa Barbara, 1984). The dominant rock units are the Hungry Valley Formation of Pliocene age (clastic sediments) exposed south of the SAF, and the Tejon Lookout granite (Cretaceous) and Neenach Volcanic Formation exposed north of it. Ramirez (1983) deduced ~220 km of post-Miocene lateral slip. The local trend of the SAF is about N60W and it includes at least three main, subparallel segments that form a 200 m wide zone. The traces of the segments are quasi-linear, discontinuous, and they are stepped with respect to each other, forming at least five small pull-aparts and sag ponds in the mapping area. The three segments were not active semi-contemporaneously and the southern segment is apparently the oldest. The largest pull-apart, 60-70 m wide, displays young (Quaternary?) silt and shale layers. We found two rock bodies that are suspected as fault-rocks. One is a 1-2 m thick sheet-like body that separates the Tejon Lookout granite from young (Recent?) clastic rocks. In the field, it appears as a gouge zone composed of poorly cemented, dark clay size grains; however, the microstructure of this rock does not reveal clear shear features. The second body is the 80-120 m wide zone of Tejon Lookout granite that extends for less than 1 km along the SAF in the mapped area. It is characterized by three structural features: (1) pulverization into friable, granular material by multitude of grain-crossing fractures; (2) abundance of dip-slip small faults that are gently dipping toward and away from the SAF; and (3) striking lack of evidence for shear parallel to the SAF. The relationships between these features and the large right-lateral shear along the SAF are puzzling. Our future work on these relations will include extensive microstructural analysis, determination of the depth of granite pulverization and the examination of several models that have been proposed to explain the enigmatic field features.

Chemical and microstructural characterization of a 9 cycle Zircaloy-2 cladding using EPMA and FIB tomography

NASA Astrophysics Data System (ADS)

Baris, A.; Restani, R.; Grabherr, R.; Chiu, Y.-L.; Evans, H. E.; Ammon, K.; Limbäck, M.; Abolhassani, S.

2018-06-01

A high burn-up Zircaloy-2 cladding is characterised in order to correlate its microstructure and composition to the change of oxidation and hydrogen uptake behaviour during long term service in the reactor. After 9 cycle of service, the chemical analysis of the cladding segment shows that most secondary phase particles (SPPs) have dissolved into the matrix. Fe and Ni are distributed homogenously in the metal matrix. Cr-containing clusters, remnants of the original Zr(Fe, Cr)2 type precipitates, are still present. Hydrides are observed abundantly in the metal side close to the metal-oxide interface. These hydrides have lower Fe and Ni concentration than that in the metal matrix. The three-dimensional (3D) reconstruction of the oxide and the metal-oxide interface obtained by Focused Ion Beam (FIB) tomography shows how the oxide microstructure has evolved with the number of cycles. The composition and microstructural changes in the oxide and the metal can be correlated to the oxidation kinetics and the H-uptake. It is observed that there is an increase in the oxidation kinetics and in the H-uptake between the third and the fifth cycles, as well as during the last two cycles. At the same time the volume fraction of cracks in the oxide significantly increased. Many fine cracks and pores exist in the oxide formed in the last cycle. Furthermore, the EPMA results confirm that this oxide formed at the last cycle reflects the composition of the metal at the metal-oxide interface after the long residence time in the reactor.

Paul Bert

NASA Technical Reports Server (NTRS)

Colin, J.

1978-01-01

This biographical article on Paul Bert highlights his studies on the physiology of respiration and barometric pressure and, in particular his contributions to the understanding of hypoxia, hyperoxia and anesthesia.

Paul Davis Restoration Information Sheet

EPA Pesticide Factsheets

Paul Davis Restoration (the Company) is located in Nicholasville, Kentucky. The settlement involves renovation activities conducted at a property constructed prior to 1978, located in Lexington, Kentucky.

Modeling and Analysis of Resolve and Morale for the Long War’

DTIC Science & Technology

2007-12-01

Alexandria, Virginia, 1995 Bratley, Paul , Bennett L. Fox, and Linus E. Schrage, A Guide to Simulation (2nd ed.), Springer-Verlag, New York, 1987 Bross... Paul J., Measuring the “Will to Fight” in Simulation, Lockheed Martin Corporation, 73rd MORS Symposium Working Group 33 Presentation, DTIC...115, 2004 MacKay, Niall, “Lanchester combat models”, Mathematics Today, Volume 42, Number 5, Pages 170-173, 2006 Macioce, Paul , “Viscoelastic

Non-Lethal Weapons for Today’s Operations

DTIC Science & Technology

2011-01-01

Division Chief Lieutenant Colonel Paul L. Scholl : paul.scholl@usmc.mil Acquisition Division Chief Kevin J. Swenson: kevin.swenson@usmc.mil Technology...Division Chief David B. Law: david.b.law1@usmc.mil Health Effects Officer Mary R. Williams : mary.r.williams1.ctr@usmc.mil Annual Report Editorial Board...Douglas J. Jerothe Lieutenant Colonel Paul L. Scholl Susan D. LeVine Kevin J. Swenson Kelley S. Hughes Alicia J. Owsiak Publication Management Bethel

College and University Speech Codes in the Aftermath of R.A.V v. City of St. Paul.

ERIC Educational Resources Information Center

Fraleigh, Douglas

In the case of RAV v. City of St. Paul, a teenager was charged with violating the city's Bias-Motivated Crime Ordinance after being accused of burning a cross inside the fenced yard of a black family. In a 9-0 decision, the Supreme Court struck down the St. Paul ordinance, a decision which raised a question as to whether many college and…

Teaching to Make Disciples in a Higher Education Online Learning Environment: A Comparison of the Literature of Online Learning, the Objectives and Practices of Three Christian Colleges, and the Letters of Paul

ERIC Educational Resources Information Center

Morris, Raymond E.

2012-01-01

This dissertation explores engaging students in spiritual formation and discipleship in the online environment. This researcher begins with the proposition that the letters of Paul are examples of distance teaching and distance learning. The effectiveness of the letters of Paul in engaging their recipients in spiritual formation and discipleship…

Development of a Robust Static Punch Experiment for Screening Unprocessed Ultra-High Molecular Weight Polyethylene (UHMWPE) Unidirectional Cross-Ply Material

DTIC Science & Technology

2014-09-01

Cross-Ply Material by David Gray, Robert Kaste , and Paul Moy ARL-TR-7090 September 2014...Screening Unprocessed Ultra-High Molecular Weight Polyethylene (UHMWPE) Unidirectional Cross-Ply Material David Gray, Robert Kaste , and Paul...ELEMENT NUMBER 6. AUTHOR(S) David Gray, Robert Kaste , and Paul Moy 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER 7

Space Weather Editors in Transition: Hail and Farewell

NASA Astrophysics Data System (ADS)

Knipp, Delores J.

2017-02-01

I hope you will join me in welcoming Dr. Daniel Welling of University of Michigan and Dr. T. Paul O'Brien of the Aerospace Corporation to the Space Weather (SWE) editorial team. Dan and Paul have answered the call to fill the shoes of two departing editors: Dr. Howard Singer and Dr. Barbara Giles. Dan brings insight related to space weather model development, while Paul brings expertise in the geospace radiation environment.

Permeability and Microstructure of Suspension Plasma-Sprayed YSZ Electrolytes for SOFCs on Various Substrates

NASA Astrophysics Data System (ADS)

Marr, Michael; Kesler, Olivera

2012-12-01

Yttria-stabilized zirconia electrolyte coatings for solid oxide fuel cells were deposited by suspension plasma spraying using a range of spray conditions and a variety of substrates, including finely structured porous stainless steel disks and cathode layers on stainless steel supports. Electrolyte permeability values and trends were found to be highly dependent on which substrate was used. The most gas-tight electrolyte coatings were those deposited directly on the porous metal disks. With this substrate, permeability was reduced by increasing the torch power and reducing the stand-off distance to produce dense coating microstructures. On the substrates with cathodes, electrolyte permeability was reduced by increasing the stand-off distance, which reduced the formation of segmentation cracks and regions of aligned and concentrated porosity. The formation mechanisms of the various permeability-related coating features are discussed and strategies for reducing permeability are presented. The dependences of electrolyte deposition efficiency and surface roughness on process conditions and substrate properties are also presented.

MICROSTRUCTURAL ABNORMALITIES IN MEWDS DEMONSTRATED BY ULTRAHIGH RESOLUTION OPTICAL COHERENCE TOMOGRAPHY

PubMed Central

NGUYEN, MY HANH T.; WITKIN, ANDRE J.; REICHEL, ELIAS; KO, TONY H.; FUJIMOTO, JAMES G.; SCHUMAN, JOEL S.; DUKER, JAY S.

2007-01-01

Background Histopathological studies of acute multiple evanescent white dot syndrome (MEWDS) have not been reported because of the transient and benign nature of the disease. Ultrahigh resolution optical coherence tomography (UHR-OCT), capable of high resolution in vivo imaging, offers a unique opportunity to visualize retinal microstructure in the disease. Methods UHR-OCT images of the maculae of five patients with MEWDS were obtained and analyzed. Diagnosis was based on clinical presentation, examination, visual field testing, and angiography. Results UHR-OCT revealed disturbances in the photoreceptor inner/outer segment junction (IS/OS) in each of the five patients (six eyes) with MEWDS. In addition, thinning of the outer nuclear layer was seen in the case of recurrent MEWDS, suggesting that repeated episodes of MEWDS may result in photoreceptor atrophy. Conclusions Subtle disruptions of the photoreceptor IS/OS are demonstrated in all eyes affected by MEWDS. UHR-OCT may be a useful adjunct to diagnosis and monitoring of MEWDS. PMID:17420691

Design and rationale of the ANALYZE ST study: a prospective, nonrandomized, multicenter ST monitoring study to detect acute coronary syndrome events in implantable cardioverter-defibrillator patients.

PubMed

Gibson, C Michael; Krucoff, Mitchell; Kirtane, Ajay J; Rao, Sunil V; Mackall, Judith A; Matthews, Ray; Saba, Samir; Waksman, Ron; Holmes, David

2014-10-01

In the setting of ST-segment elevation myocardial infarction, timely restoration of normal blood flow is associated with improved myocardial salvage and survival. Despite improvements in door-to-needle and door-to-balloon times, there remains an unmet need with respect to improved symptom-to-door times. A prior report of an implanted device to monitor ST-segment deviation demonstrated very short times to reperfusion among patients with an acute coronary syndrome (ACS) with documented thrombotic occlusion. The goal of the ANALYZE ST study is to evaluate the safety and effectiveness of a novel ST-segment monitoring feature using an existing implantable cardioverter-defibrillator (ICD) among patients with known coronary artery disease. The ANALYZE ST study is a prospective, nonrandomized, multicenter, pivotal Investigational Device Exemption study enrolling 5,228 patients with newly implanted ICD systems for standard clinical indications who also have a documented history of coronary artery disease. Patients will be monitored for 48 months, during which effectiveness of the device for the purpose of early detection of cardiac injury will be evaluated by analyzing the sensitivity of the ST monitoring feature to identify clinical ACS events. In addition, the safety of the ST monitoring feature will be evaluated through the assessment of the percentage of patients for which monitoring produces a false-positive event over the course of 12 months. The ANALYZE ST trial is testing the hypothesis that the ST monitoring feature in the Fortify ST ICD system (St. Jude Medical, Inc., St. Paul, MN) (or other ICD systems with the ST monitoring feature) will accurately identify patients with clinical ACS events. Copyright © 2014 Mosby, Inc. All rights reserved.

MACHINING TEST SPECIMENS FROM HARVESTED ZION RPV SEGMENTS

DOE Office of Scientific and Technical Information (OSTI.GOV)

Nanstad, Randy K; Rosseel, Thomas M; Sokolov, Mikhail A

2015-01-01

The decommissioning of the Zion Nuclear Generating Station (NGS) in Zion, Illinois, presents a special and timely opportunity for developing a better understanding of materials degradation and other issues associated with extending the lifetime of existing nuclear power plants (NPPs) beyond 60 years of service. In support of extended service and current operations of the US nuclear reactor fleet, the Oak Ridge National Laboratory (ORNL), through the Department of Energy (DOE), Light Water Reactor Sustainability (LWRS) Program, is coordinating and contracting with Zion Solutions, LLC, a subsidiary of Energy Solutions, an international nuclear services company, the selective procurement of materials,more » structures, components, and other items of interest from the decommissioned reactors. In this paper, we will discuss the acquisition of segments of the Zion Unit 2 Reactor Pressure Vessel (RPV), cutting these segments into blocks from the beltline and upper vertical welds and plate material and machining those blocks into mechanical (Charpy, compact tension, and tensile) test specimens and coupons for microstructural (TEM, SEM, APT, SANS and nano indention) characterization. Access to service-irradiated RPV welds and plate sections will allow through wall attenuation studies to be performed, which will be used to assess current radiation damage models [1].« less

The Mobilization of Effort: Sergeants, Patrol Officers, and Productivity in an American Agency.

DTIC Science & Technology

1982-02-01

Berlceley. Cain, M. 1974 Society and the policeman’s role. London: Routledge and Kegan Paul. Chatterton, Michael 1975 Organizational relationships and...Routledge and Kegan Paul. Pike, D. 1981 A comparative analysis of the role of women in police training. Unpublished Ph.D. Dissertation, Yale University...David 1970 Yhe theory of organization. NY: Basic. 1974 ()rranizational work. London: Root ledge and Kegan Paul. Van Maanen , lo’in 1972 Pledging the

Life Cycle Management Commands: Wartime Process or Long-Term Solution?

DTIC Science & Technology

2007-03-31

this memorandum. • 1998: The Director of the Army Acquisition Corps (AAC), Lieutenant General (LTG) Paul Kern, testified before Congress about two...the Army finally determined that PVS did not benefit the Army overall. 17 The Director of the Army Acquisition Corps (AAC), LTG Paul Kern, championed...2 and 3 on pages 10 and 11 of the study. 9 LTG Paul J. Kern, Military Deputy to the ASA(ALT), comments made to the Army Acquisition Corps (AAC

Minutes of the Explosives Safety Seminar (19th) Held at Los Angeles, California, 9-10-11 September 1980. Volume 1

DTIC Science & Technology

1980-01-01

DOUBLE-BASE EXTRUSION COMPOSITIONS ................................... 89 Messrs. Craig E. Johnson and Paul F. Dendor V I GUN PROPELLANT PROPAGATION IN...Mullins and C. F. Baker RESULTS AND ANALYSIS OF STRENGTHENED STEEL BUILDING BLAST TESTS ..... 165 Messrs. Frederic E. Sock, Norval Dobbs, Paul Price and...347 Mr. J. Paul Glenn I viLR SESSION - EXPLOSION CONTAIMENT & VENTING Moderator - Mr. Irving Forsten EXPLOSION CONTAINMENT VESSELS AND M4TERIALS

Another Crossroads? Professional Military Education Two Decades After the Goldwater-Nichols Act and the Skelton Panel

DTIC Science & Technology

2010-04-01

staff including Erin Conaton, Paul Arcangeli, Robert Simmons, Paul Oostburg Sanz, Paul Lewis, Debra Wada, Suzanne McKenna, Vickie Plunkett, Craig ...National Defense University: Lieutenant General Frances C. Wilson, Dr. John Deegan , Jr., and Dr. John W. Yaeger, 16 March 2009. Marine Corps...diversity.” The Washington Post (on line), 10 November 2009. Deegan , John, Jr. “First Step to Academic Excellence: The Faculty.” 14 April 2009

The Inadequacy of Definition and the Utility of a Theory of Hybrid Conflict: Is the Hybrid Threat New?

DTIC Science & Technology

2012-05-17

Era of Persistent Conflict, edited by Paul Brister, William H. Natter III, & Robert R. Tomes, 60-69. Washington, DC: CENSA, 2011. Gott, Kendall G...Conflict.” In Hybrid Warfare and Transnational Threats: Perspectives for an Era of Persistent Conflict, edited by Paul Brister, William H. Natter...Hybrid Warfare and Transnational Threats: Perspectives for an Era of Persistent Conflict, edited by Paul Brister, William H. Natter III, & Robert R

Welcoming nora: a family event.

PubMed

Walsh, Allison J; Walsh, Paul R; Walsh, Jane M; Walsh, Gavin T

2011-01-01

In this column, Allison and Paul Walsh share the story of the birth of Nora, their third baby and their second child to be born at home. Allison and Paul share their individual memories of labor and birth. But their story is only part of the story of Nora's birth. Nora's birth was a family event, with Allison and Paul's other children very much part of the experience. Jane and Gavin share their own memories of their baby sister's birth.

Short of General War: Perspectives on the Use of Military Power in the 21st Century

DTIC Science & Technology

2010-04-01

Paul , MN: Zenith Press, 2004. Hammes’ work is one articulation of this argument. 5. United States Joint Forces Command, “The JOE 2008, Joint Operating...this approach would actually be counterproductive and might be more harmful than beneficial to American interests. According to Paul Sanders, 18...A New Security Strategy for America, Washington, DC: Brookings Institution Press, 1999, p. 55. 50. Paul J. Sanders, “Not the Way to Intervene

Enhancing the Effectiveness of Ad Hoc Units: A Revised Training Model

DTIC Science & Technology

2009-06-01

thank Dr. Kalev “Gunner” Sepp, Dr. Bob McNab, Dr. John Arquilla, Dr. Nancy Roberts, Dr. Susan Hocevar, and Dr. Dorothy Denning for providing their...also want to thank Colonel Paul Warren, Information Operations Branch Chief at U.S. Central Command – Special Operations (SOCCENT), for sponsoring my...Academy of Management Journal, 38 (1), 60-84. Paul M. Nemiroff, Paul M., William, A. Pasmore and David L. Ford, Jr., “The Effects of Two

The first 'molecular disease': a story of Linus Pauling, the intellectual patron.

PubMed

Gormley, Melinda

2007-06-01

In November 1949, chemist Linus Pauling and three colleagues published an article on sickle-cell anemia, a study that opened up new and exciting possibilities for research into such 'molecular diseases'. Even before this celebrated publication appeared in Science, Pauling foresaw its potential benefits and announced it as a medical breakthrough: '... our structural chemistry and understanding of molecules is getting to the point where it should be of assistance in converting medicine into a real science' [Guiles, R. (1949) Discovery of blood disease called key to cancer research. The Detroit Times 13 Sep 1949, Newspaper Clippings 1949n.18, Pauling Papers.]. Their discovery--that this debilitating disorder was caused by an abnormal form of hemoglobin--was borne out of a rich mix of expertise, from Pauling's remarkable intuition to the careful experimental chemistry of his student Harvey A. Itano. It also relied upon technological innovation: a custom-made electrophoresis machine housed at the California Institute of Technology was the perfect tool to reveal fundamental chemical differences between normal and abnormal forms of hemoglobin. Not only did this work establish a new way of looking at inherited diseases, it also stimulated the mass production of the electrophoresis machine as an essential investigative and diagnostic tool. A close inspection of this case study illustrates just how Pauling ran his laboratory and helps to explain how one man could achieve so much over his lifetime.

Fission gas bubble identification using MATLAB's image processing toolbox

DOE Office of Scientific and Technical Information (OSTI.GOV)

Collette, R.

Automated image processing routines have the potential to aid in the fuel performance evaluation process by eliminating bias in human judgment that may vary from person-to-person or sample-to-sample. This study presents several MATLAB based image analysis routines designed for fission gas void identification in post-irradiation examination of uranium molybdenum (U–Mo) monolithic-type plate fuels. Frequency domain filtration, enlisted as a pre-processing technique, can eliminate artifacts from the image without compromising the critical features of interest. This process is coupled with a bilateral filter, an edge-preserving noise removal technique aimed at preparing the image for optimal segmentation. Adaptive thresholding proved to bemore » the most consistent gray-level feature segmentation technique for U–Mo fuel microstructures. The Sauvola adaptive threshold technique segments the image based on histogram weighting factors in stable contrast regions and local statistics in variable contrast regions. Once all processing is complete, the algorithm outputs the total fission gas void count, the mean void size, and the average porosity. The final results demonstrate an ability to extract fission gas void morphological data faster, more consistently, and at least as accurately as manual segmentation methods. - Highlights: •Automated image processing can aid in the fuel qualification process. •Routines are developed to characterize fission gas bubbles in irradiated U–Mo fuel. •Frequency domain filtration effectively eliminates FIB curtaining artifacts. •Adaptive thresholding proved to be the most accurate segmentation method. •The techniques established are ready to be applied to large scale data extraction testing.« less

Pathology of callosal damage in ALS: An ex-vivo, 7 T diffusion tensor MRI study.

PubMed

Cardenas, Agustin M; Sarlls, Joelle E; Kwan, Justin Y; Bageac, Devin; Gala, Zachary S; Danielian, Laura E; Ray-Chaudhury, Abhik; Wang, Hao-Wei; Miller, Karla L; Foxley, Sean; Jbabdi, Saad; Welsh, Robert C; Floeter, Mary Kay

2017-01-01

The goal of this study was to better understand the changes in tissue microstructure that underlie white matter diffusion changes in ALS patients. Diffusion tensor imaging was carried out in postmortem brains of 4 ALS patients and two subjects without neurological disease on a 7 T MRI scanner using steady-state free precession sequences. Fractional anisotropy (FA) was measured in the genu, body, and splenium of the corpus callosum in formalin-fixed hemispheres. FA of the body and genu was expressed as ratio to FA of the splenium, a region unaffected in ALS. After imaging, tissue sections of the same segments of the callosum were stained for markers of different tissue components. Coded image fields were rated for pathological changes by blinded raters. The FA body/FA splenium ratio was reduced in ALS patients compared to controls. Patchy areas of myelin pallor and cells immunostained for CD68, a microglial-macrophage marker, were only observed in the body of the callosum of ALS patients. Blinded ratings showed increased CD68 + microglial cells in the body of the corpus callosum in ALS patients, especially those with C9orf72 mutations, and increased reactive astrocytes throughout the callosum. Reduced FA of the corpus callosum in ALS results from complex changes in tissue microstructure. Callosal segments with reduced FA had large numbers of microglia-macrophages in addition to loss of myelinated axons and astrogliosis. Microglial inflammation contributed to reduced FA in ALS, and may contribute to a pro-inflammatory state, but further work is needed to determine their role.

Paul Feyerabend: Science and the Anarchist.

ERIC Educational Resources Information Center

Science, 1979

1979-01-01

Presents comments on the arguments of Paul Feyerabend toward progression science. The positions held by this philosopher of science are given with accompanying remarks from other philosophers and historians. (SA)

Paul G. Silver (1948-2009)

NASA Astrophysics Data System (ADS)

Solomon, Sean C.

2009-11-01

A pioneer in the novel application of seismic observations to infer the flow field of Earth's mantle and the mechanics of fault zones, Paul Gordon Silver tragically was killed on 7 August in an automobile accident that also took the life of his 22-year-old daughter, Celine. Born and raised in Los Angeles, Calif., Paul received all of his degrees from the University of California. Following receipt of a B.A. in psychology from the University of California (UC), Los Angeles (1970), he pursued a career as a musician for several years. Drawn to Earth science, Paul obtained a B.A. in geology from UC Berkeley, in 1976, and he was recruited by Tom Jordan (now at the University of Southern California) to the graduate program of the Scripps Institution of Oceanography at UC San Diego.

Major Additions to the Linus Pauling Canon

NASA Astrophysics Data System (ADS)

Davenport, Derek A.

2002-08-01

The National Library of Medicine has also just posted a Web site on Linus Pauling in its Profiles of Science series. While by no means as rich as the various Oregon State University sites, it is well worth visiting. There are texts of various speeches (including his Nobel address), many downloadable photographs, correspondence (including a poignant letter to James Watson and Francis Crick concerning their "rival" structures for DNA), and much else besides. There is a certain irony in Linus Pauling being honored by the National Library of Medicine. Ever since his 1949 presidential address to the American Chemical Society, and perhaps earlier, Pauling had been at loggerheads, sometimes acrimoniously so, with the medical establishment. It is easy to imagine him somewhere in the timeless infinitude of the empyrean sporting his characteristic ear-to-ear grin.

Enhancing Electrophoretic Display Lifetime: Thiol-Polybutadiene Evaporation Barrier Property Response to Network Microstructure

DOE Office of Scientific and Technical Information (OSTI.GOV)

Cook, Caitlyn Christian

An evaporation barrier is required to enhance the lifetime of electrophoretic deposition (EPD) displays. As EPD functions on the basis of reversible deposition and resuspension of colloids suspended in a solvent, evaporation of the solvent ultimately leads to device failure. Incorporation of a thiol-polybutadiene elastomer into EPD displays enabled display lifetime surpassing six months in counting and catalyzed rigid display transition into a flexible package. Final flexible display transition to mass production compels an electronic-ink approach to encapsulate display suspension within an elastomer shell. Final thiol-polybutadiene photosensitive resin network microstructure was idealized to be dense, homogeneous, and expose an elasticmore » response to deformation. Research at hand details an approach to understanding microstructural change within display elastomers. Polybutadiene-based resin properties are modified via polymer chain structure, with and without added aromatic urethane methacrylate difunctionality, and in measuring network response to variation in thiol and initiator concentration. Dynamic mechanical analysis results signify that cross-linked segments within a difunctionalized polybutadiene network were on average eight times more elastically active than that of linked segments within a non-functionalized polybutadiene network. Difunctionalized polybutadiene samples also showed a 2.5 times greater maximum elastic modulus than non-functionalized samples. Hybrid polymer composed of both polybutadiene chains encompassed TE-2000 stiffness and B-1000 elasticity for use in encapsulating display suspension. Later experiments measured kinetic and rheological response due to alteration in dithiol cross-linker chain length via real time Fourier transform infrared spectroscopy and real-time dynamic rheology. Distinct differences were discovered between dithiol resin systems, as maximum thiol conversion achieved in short and long chain length dithiols was 86% and 11%, respectively. Oscillatory real-time rheological experiments confirmed a more uniform network to better dissipate applied shear in short chain length dithiol systems, as long chain length dithiols relayed a steep internal stress build-up due to less cross-links and chain entanglements. Thorough understanding of network formation aids the production of a stronger and impermeable elastomeric barrier for preservation of EPD displays.« less

A reference skeletal dosimetry model for an adult male radionuclide therapy patient based on three-dimensional imaging and paired-image radiation transport

NASA Astrophysics Data System (ADS)

Shah, Amish P.

The need for improved patient-specificity of skeletal dose estimates is widely recognized in radionuclide therapy. Current clinical models for marrow dose are based on skeletal mass estimates from a variety of sources and linear chord-length distributions that do not account for particle escape into cortical bone. To predict marrow dose, these clinical models use a scheme that requires separate calculations of cumulated activity and radionuclide S values. Selection of an appropriate S value is generally limited to one of only three sources, all of which use as input the trabecular microstructure of an individual measured 25 years ago, and the tissue mass derived from different individuals measured 75 years ago. Our study proposed a new modeling approach to marrow dosimetry---the Paired Image Radiation Transport (PIRT) model---that properly accounts for both the trabecular microstructure and the cortical macrostructure of each skeletal site in a reference male radionuclide patient. The PIRT model, as applied within EGSnrc, requires two sets of input geometry: (1) an infinite voxel array of segmented microimages of the spongiosa acquired via microCT; and (2) a segmented ex-vivo CT image of the bone site macrostructure defining both the spongiosa (marrow, endosteum, and trabeculae) and the cortical bone cortex. Our study also proposed revising reference skeletal dosimetry models for the adult male cancer patient. Skeletal site-specific radionuclide S values were obtained for a 66-year-old male reference patient. The derivation for total skeletal S values were unique in that the necessary skeletal mass and electron dosimetry calculations were formulated from the same source bone site over the entire skeleton. We conclude that paired-image radiation-transport techniques provide an adoptable method by which the intricate, anisotropic trabecular microstructure of the skeletal site; and the physical size and shape of the bone can be handled together, for improved compilation of reference radionuclide S values. We also conclude that this comprehensive model for the adult male cancer patient should be implemented for use in patient-specific calculations for radionuclide dosimetry of the skeleton.

78 FR 62357 - Sunshine Act Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-10-21

..., filing of petitions and applications and agency #0;statements of organization and functions are examples... interested in obtaining more information should contact Paul Kollmer-Dorsey at (202) 203-4545. Paul Kollmer...

Microstructural record of cataclastic and dissolution-precipitation processes from shallow crustal carbonate strike-slip faults, Northern Calcareous Alps (Austria)

NASA Astrophysics Data System (ADS)

Bauer, Helene; Grasemann, Bernhard; Decker, Kurt

2015-04-01

The concept of coseismic slip and aseismic creep deformation along faults is supported by the variability of natural fault rocks and their microstructures. Faults in carbonate rocks are characterized by very narrow principal slip zones (cm to mm wide) containing (ultra)cataclastic fault rocks that accommodate most of the fault displacement. Fluidization of ultracataclastic sub layers and thermal decomposition of calcite due to frictional heating have been proposed as possible indicators for seismic slip. Dissolution-precipitation (DP) processes are possible mechanism of aseismic sliding, resulting in spaced cleavage solution planes and associated veins, indicating diffusive mass transfer and precipitation in pervasive vein networks. We investigated exhumed, sinistral strike-slip faults in carbonates of the Northern Calcareous Alps. The study presents microstructural investigations of natural carbonate fault rocks that formed by cataclastic and dissolution-precipitation related deformation processes. Faults belong to the eastern segment of the Salzachtal-Ennstal-Mariazell-Puchberg (SEMP) fault system that was formed during eastward lateral extrusion of the Eastern Alps in Oligocene to Lower Miocene. The investigated faults accommodated sinistral slip between several tens and few hundreds of meters. Microstructural analysis of fault rocks was done with scanning electron microscopy and optical microscopy. Deformation experiments of natural fault rocks are planned to be conducted at the Sapienza University of Roma and should be available at the meeting. The investigated fault rocks give record of alternating cataclastic deformation and DP creep. DP fault rocks reveal various stages of evolution including early stylolites, pervasive pressure solution seams and cleavage, localized shear zones with syn-kinematic calcite fibre growth and mixed DP/cataclastic microstructures, involving pseudo sc- and scc'-fabrics. Pressure solution seams host fine grained kaolinit, chlorite and illite while the protolith shows only weak evidence of detrital clay content. Our studies suggest that velocity weakening and strengthening mechanisms alternated during the accumulation of displacement along the SEMP fault zone.

Keynote Address: When Breath Becomes Air-As Physician Becomes Patient.

PubMed

Kalanithi, Lucy; Wakelee, Heather; Carlson, Robert W

2017-05-01

As part of the NCCN 22nd Annual Conference: Improving the Quality, Effectiveness, and Efficiency of Cancer Care, Lucy Kalanithi, MD, wife of now-deceased best-selling author Paul Kalanithi ( When Breath Becomes Air ), and Heather Wakelee, MD, Paul's oncologist, discussed-for the first time together in a public forum-Paul's experience of going from a neurosurgery resident to a patient with cancer with a terminal diagnosis. Robert Carlson, MD, moderated the discussion. Copyright © 2017 by the National Comprehensive Cancer Network.

25. Photocopy of aerial photograph dated May 1930; J. E. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

25. Photocopy of aerial photograph dated May 1930; J. E. Quigley, Photographer; original filed as MR2.9/SP8/p355 in Audio-visual Collection of Minnesota Historical Society, St. Paul; SHOWS RECENTLY COMPLETED NORTHWEST HANGAR AND ADMINISTRATION BUILDING I N UPPER LEFT (THREE-QUARTER VIEW OF WEST SIDE AND SOUTH FRONT); ALSO SHOWS THE SIMILARLY DESIGNED MUNICIPAL HANGAR UNDER CONSTRUCTION IN FOREGROUND; LOOKING NORTHEAST - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

Proceedings of the Conference on the Design of Experiments in Army Research Development and Testing (34th) Held in Las Cruces, New Mexico on 19-21 October 1988

DTIC Science & Technology

1989-07-01

Webb and Linda L.C. Moss.............,,...,....., 27 COMPARISON OF RELIABILITY CONFIDENCE INTERVALS Paul H . Thrasher. ......... . 0 1...Webb and Linda L.C. Moss, U.S. Army Ballistic Research Laboratory COMPARISON OF RELIABILITY CONFIDENCE INTERVALS Paul H. Thrasher, White Sands Missile...RELEVANT Paul H. Thrasher, White Sands Missile Range 0930 - 1000 BREAK 1000 - 1130 GENERAL SESSION III Chairperson: Douglas B. Tang, Valter Reed Army

A Comparative Analysis of Army Physical Readiness Test Results of AMEDD Units Without Formal Physical Training Programs

DTIC Science & Technology

1984-06-01

Paul C.; Albrink , Margaret J.; and Krall, John M. "Exercise Effects on Fitness,, Lipids, Glucose Tolerance and Insulin Levels in Young Adults...1982): 14-15. Shepherd, Roy J.; Corey, Paul; Renzland, Peter; and Cox Michael . "The Impact of Changes in Fitness and Lifestyle Upon Health Care...Utilization." Canadian Journal of Public Health 74 (January/February 1983): 51-55. Shepherd, Roy J.; Corey, Paul; Renzland, Peter; and Cox, Michael . "The

Final Environmental Impact Statement. Ontonagon Harbor Operation and Maintenance Activities. Ontonagon County, Michigan.

DTIC Science & Technology

1975-08-01

Paul, Minnesota 55101 August 1975 ,.’U * - S • S S S S S • S U U FIN"L ENVIRONMENTAL IMPACT STATEMENT OPERATION AND MAINTENANCE ACTIVITIES ONTONAGON...HARBOR, MICHIGAN LAKE SUPERIOR Responsible Office: St. Paul District, Corps of Engineers, 1135 U.S. Post Office and Custom House, St. Paul, Minnesota ... mining is present at White Pine, 12 air miles southwest of Ontonagon Harbor. 6 2.130 Topography. - The area’s topography is directly related to the

Aerodynamic Optimization of a Supersonic Bending Body Projectile by a Vector-Evaluated Genetic Algorithm

DTIC Science & Technology

2016-12-01

Evaluated Genetic Algorithm prepared by Justin L Paul Academy of Applied Science 24 Warren Street Concord, NH 03301 under contract W911SR...Supersonic Bending Body Projectile by a Vector-Evaluated Genetic Algorithm prepared by Justin L Paul Academy of Applied Science 24 Warren Street... Genetic Algorithm 5a. CONTRACT NUMBER W199SR-15-2-001 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) Justin L Paul 5d. PROJECT

STS 41-G crew prepares to leave Operations and checkout bldg for launch

NASA Image and Video Library

1984-10-05

41G-90081 / S17-90081 (5 Oct 1984) --- The seven member crew leaves the Operations and Checkout Building (OCB) to take a van ride to the launch pad. Leading the way is Kathryn D. Sullivan followed in file by Robert L. Crippen, Paul D. Scully-Power and Jon A. McBride. On the right side are Sally K. Ride, David C. Leestma and Marc Garneau. Trailing the crew are George W. S. Abbey, Richard Nygren, Paul Bulver, and Paul J. Weitz.

Paul D. Sturkie: Avian cardiac physiologist.

PubMed

Bello, Nicholas T; Cohick, Wendie S; McKeever, Kenneth H; Malinowski, Karyn

2018-06-01

Sturkie's Avian Physiology is a highly regarded textbook for the study of comparative poultry physiology. Less well known, however, is the contribution of Paul D. Sturkie (1909-2002) as a pioneer in the experimental physiology of avian species. His seminal research on the cardiovascular and hemodynamic controls of chickens and egg-laying hens had a notable impact on the poultry industry and breeding practices of farmers. The purpose of this article is to highlight the contributions and practical insights of Paul D. Sturkie to the field of poultry science.

Paul Oil Company, Inc. Consent Agreements and Proposed Final Orders

EPA Pesticide Factsheets

Proposed settlements, recorded in two Consent Agreements and Final Orders (“Proposed Consent Agreements”), between EPA and Paul Oil Company, Inc., to resolve two civil administrative penalty proceedings.

5. Historic American Buildings Survey Paul J. F. Schumacher, Photographer ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

5. Historic American Buildings Survey Paul J. F. Schumacher, Photographer September 1957 FRONT and WEST SIDE ELEVATIONS - Sacred Heart Mission, Interstate 90 & Interchange 39, Cataldo, Shoshone County, ID

Paul Lampe/McGarry Houghton | Division of Cancer Prevention

Cancer.gov

Project Title/Research Areas: Hybrid Plasma Markers that Complement CT Imaging for Early Lung Cancer DetectionPrincipal Investigator/Institution:  Paul Lampe/McGarry Houghton, Fred Hutchinson Cancer Research Center |

Paul Dirac

NASA Astrophysics Data System (ADS)

Pais, Abraham; Jacob, Maurice; Olive, David I.; Atiyah, Michael F.

2005-09-01

Preface Peter Goddard; Dirac memorial address Stephen Hawking; 1. Paul Dirac: aspects of his life and work Abraham Pais; 2. Antimatter Maurice Jacob; 3. The monopole David Olive; 4. The Dirac equation and geometry Michael F. Atiyah.

Paul Dirac

NASA Astrophysics Data System (ADS)

Pais, Abraham; Jacob, Maurice; Olive, David I.; Atiyah, Michael F.

1998-02-01

Preface Peter Goddard; Dirac memorial address Stephen Hawking; 1. Paul Dirac: aspects of his life and work Abraham Pais; 2. Antimatter Maurice Jacob; 3. The monopole David Olive; 4. The Dirac equation and geometry Michael F. Atiyah.

13. Photocopy of photograph mounted on Christmas card (from St. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

13. Photocopy of photograph mounted on Christmas card (from St. Paul's Church) Photographer unknown 1906 INTERIOR LOOKING EAST - St. Paul's Episcopal Church, 120 East J Street, Benicia, Solano County, CA

18. MAINTENANCE SHOP, FIRST FLOOR, INTERIOR, ENGINE AND AIRPLANE OVERHAUL ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

18. MAINTENANCE SHOP, FIRST FLOOR, INTERIOR, ENGINE AND AIRPLANE OVERHAUL AREAS; LOOKING EAST - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

17. MAINTENANCE SHOP, FIRST FLOOR, INTERIOR, ENGINE AND AIRPLANE OVERHAUL ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

17. MAINTENANCE SHOP, FIRST FLOOR, INTERIOR, ENGINE AND AIRPLANE OVERHAUL AREAS; LOOKING WEST. - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

ARC-2002-ACD02-0055-04

NASA Image and Video Library

2002-03-20

Sun-Earth Day WEBCAST - NASA TV; Host Paul Mortfield, Astronomer Stanford Solar Center and visiting students from San Francisco Bay Area Schools Documentation Technology Branch Video communications van (code-JIT) David Maurantonio, Paul Langston

Catalytic creativity. The case of Linus Pauling.

PubMed

Nakamura, J; Csikszentmihalyi, M

2001-04-01

This article illustrates how creativity is constituted by forces beyond the innovating individual, drawing examples from the career of the eminent chemist Linus Pauling. From a systems perspective, a scientific theory or other product is creative only if the innovation gains the acceptance of a field of experts and so transforms the culture. In addition to this crucial selective function vis-à-vis the completed work, the social field can play a catalytic role, fostering productive interactions between person and domain throughout a career. Pauling's case yields examples of how variously the social field contributes to creativity, shaping the individual's standards of judgment and providing opportunities, incentives, and critical evaluation. A formidable set of strengths suited Pauling for his scientific achievements, but examination of his career qualifies the notion of a lone genius whose brilliance carries the day.

Brotherly Advice: Letters from Hugo to Paul Ehrenfest in his Final Years

NASA Astrophysics Data System (ADS)

Halpern, Paul

2006-03-01

At the start of the 1930s, theoretician Paul Ehrenfest spent much of his time traveling through America and Europe while engaged in a steady stream of lectures. This traveling phase coincided with a frantic and intense period of negative self-examination, financial difficulty, and various other personal concerns that would ultimately lead to his 1933 suicide. Throughout these final years, he kept up a steady correspondence with his brother Hugo, a physician based in Saint Louis. Ten years older than Paul, Hugo freely doled out frank psychological advice about subjects ranging from the proper treatment of children to the dangers of self-pity. Through a look at some of the letters exchanged between the two brothers, this talk will examine the role Hugo played during the dark final years of Paul Ehrenfest's life.

The use of GIS for monitoring and predicting urban growth in east and west St Paul, Winnipeg, Manitoba, Canada.

PubMed

Hathout, S

2002-11-01

Most urban growth in Canada occurs in the urban-rural fringe. The increasing dispersal of the Canadian urban population is due to centrifugal forces pulling urbanites past the suburbs into the surrounding exurban communities. Most Canadian urban centres are located on prime agricultural land. Exurban sprawl devours an inordinate amount of the better agricultural land. The growth around the city of Winnipeg is a case in point. Within Winnipeg's urban field are the rural municipalities of East and West St Paul. The objective of this study is to investigate the impact of urban growth on the agricultural land of these RMs as well as the rate of urban growth in both Municipalities based on database analysis using aerial photographs taken in 1960 and 1989 and Geographic Information System (GIS). East St Paul was found to have a higher rate of urbanization (from 10.14% to 43.75%) between 1960 and 1989 than West St Paul (from 7.36% to 23.57%). The growth prediction using Markov probability chain analysis showed that East St Paul will henceforth experience a reduced rate of increase than West St Paul. The rate of urbanization for both RMs is found to be comparable with areas surrounding other major cities such as Toronto. The largest increases in urban land use categories occurred in and around the existing exurban settlements. It was found that most urbanization take place on the most fertile soil.

An Overview of the MSFC Electrostatic Levitation Facility

NASA Technical Reports Server (NTRS)

Rogers, J. R.; Robinson, M. B.; Hyers, R. W.; Savage, L.; Rathz, T.

2000-01-01

Electrostatic levitation (ESL) provides a means to study molten materials in a contamination-free environment, including no contact with a container. Many phenomena important to materials science can be studied in the ESL. Solidification of metals, alloys and undercooled materials represent an important topic for research in the ESL. Recent studies of metals and alloys during solidification in the ESL are reported. Measurements include time, temperature and transformation of metallic glass-forming alloys, solidification velocities, and microstructure. This multimedia report includes a video clip showing processing in the ESL, with descriptions of the different segments in the text.

Effect of Processing Conditions on the Anelastic Behavior of Plasma Sprayed Thermal Barrier Coatings

NASA Astrophysics Data System (ADS)

Viswanathan, Vaishak

2011-12-01

Plasma sprayed ceramic materials contain an assortment of micro-structural defects, including pores, cracks, and interfaces arising from the droplet based assemblage of the spray deposition technique. The defective architecture of the deposits introduces a novel "anelastic" response in the coatings comprising of their non-linear and hysteretic stress-strain relationship under mechanical loading. It has been established that this anelasticity can be attributed to the relative movement of the embedded defects under varying stresses. While the non-linear response of the coatings arises from the opening/closure of defects, hysteresis is produced by the frictional sliding among defect surfaces. Recent studies have indicated that anelastic behavior of coatings can be a unique descriptor of their mechanical behavior and related to the defect configuration. In this dissertation, a multi-variable study employing systematic processing strategies was conducted to augment the understanding on various aspects of the reported anelastic behavior. A bi-layer curvature measurement technique was adapted to measure the anelastic properties of plasma sprayed ceramic. The quantification of anelastic parameters was done using a non-linear model proposed by Nakamura et.al. An error analysis was conducted on the technique to know the available margins for both experimental as well as computational errors. The error analysis was extended to evaluate its sensitivity towards different coating microstructure. For this purpose, three coatings with significantly different microstructures were fabricated via tuning of process parameters. Later the three coatings were also subjected to different strain ranges systematically, in order to understand the origin and evolution of anelasticity on different microstructures. The last segment of this thesis attempts to capture the intricacies on the processing front and tries to evaluate and establish a correlation between them and the anelastic parameters.

Better Skeletal Microstructure Confers Greater Mechanical Advantages in Chinese-American Women Versus White Women

PubMed Central

Liu, X Sherry; Walker, Marcella D; McMahon, Donald J; Udesky, Julia; Liu, George; Bilezikian, John P; Guo, X Edward

2013-01-01

Despite lower areal bone mineral density (aBMD), Chinese-American women have fewer fractures than white women. We hypothesized that better skeletal microstructure in Chinese-American women in part could account for this paradox. Individual trabecula segmentation (ITS), a novel image-analysis technique, and micro–finite-element analysis (μFEA) were applied to high-resolution peripheral quantitative computed tomography (HR-pQCT) images to determine bone microarchitecture and strength in premenopausal Chinese-American and white women. Chinese-American women had 95% and 80% higher plate bone volume fraction at the distal radius and tibia, respectively, as well as 20% and 18% higher plate number density compared with white women (p < .001). With similar rodlike characteristics, the plate-to-rod ratio was twice as high in the Chinese-American than in white trabecular bone (p < .001). Plate-rod junction density, a parameter indicating trabecular network connections, was 37% and 29% greater at the distal radius and tibia, respectively, in Chinese-American women (p < .002). Moreover, the orientation of the trabecular bone network was more axially aligned in Chinese-American women because axial bone volume fraction was 51% and 32% higher at the distal radius and tibia, respectively, than in white women (p < .001). These striking differences in trabecular bone microstructure translated into 55% to 68% (distal radius, p < .001) and 29% to 43% (distal tibia, p < .01) greater trabecular bone strength, as assessed by Young’s moduli, in the Chinese-American versus the white group. The observation that Chinese-American women have a major microstructural advantage over white women may help to explain why their risk of fracture is lower despite their lower BMD. PMID:21351150

How Energy Efficiency is Adding Jobs in St. Paul, Minnesota

ScienceCinema

Hannigan, Jim; Coleman, Chris; Oliver, LeAnn; Jambois, Louis

2018-02-07

Saint Paul, Minnesota is using an energy efficiency grant to provide commercial retrofits that will allow a local produce distribution company to dramatically reduce its energy costs and add dozens of new workers.

Route-Specific Transit Marketing in Minneapolis/St. Paul, MN

DOT National Transportation Integrated Search

1985-10-01

The Minneapolis/St. Paul Transit Marketing Demonstration involved the administration of a combination of marketing techniques on five selected transit routes. The approach employed differed from most previous marketing demonstrations in that 1) prici...

JAFCO d/b/a Paul Davis Restoration and Remodeling Information Sheet

EPA Pesticide Factsheets

JAFCO d/b/a Paul Davis Restoration and Remodeling (the Company) is located in Memphis, Tennessee. The settlement involves renovation activities conducted at property constructed prior to 1978, located in Memphis, Tennessee.

How Energy Efficiency is Adding Jobs in St. Paul, Minnesota

DOE Office of Scientific and Technical Information (OSTI.GOV)

Hannigan, Jim; Coleman, Chris; Oliver, LeAnn

2011-01-01

Saint Paul, Minnesota is using an energy efficiency grant to provide commercial retrofits that will allow a local produce distribution company to dramatically reduce its energy costs and add dozens of new workers.

Investigation of retinal microstructure in healthy eyes and dry age-related macular degeneration using a combined AO-OCT-SLO system

NASA Astrophysics Data System (ADS)

Wells-Gray, Elaine M.; Choi, Stacey S.; Ohr, Matthew; Cebulla, Colleen M.; Doble, Nathan

2017-02-01

Combined adaptive optics (AO) optical coherence tomography (OCT) scanning laser ophthalmoscopy (SLO) imaging allows simultaneous en face and cross sectional views of the retina. We describe improvements to our AO-OCT-SLO system and highlight its resolution capability and clinical utility by presenting results from 3 control and 4 dry agerelated macular degeneration (AMD) subjects. From a group of subjects with healthy eyes, OCT A-scans were grouped as originating from cones or rods and were averaged. The resulting reflectance profiles were then used to identify the location of cone and rod segments. Results for rods and cones were compared, with the focus on inner segment (IS) and outer segment (OS) structures and where these cells embed into the retinal pigment epithelium (RPE). In the AMD patients, cone IS and OS lengths were measured over and around drusen for two retinal regions (fovea-2° and 2°-4°), and those results were correlated to drusen height. For the fovea-2° region, the drusen height that caused statistically significant shortening of cone ISL and OSL compared to the unaffected adjacent area were 40 μm and 50 μm respectively (p = 0.009, and p < 0.001, respectively). For the 2°-4° region, the equivalent drusen heights that caused significant shortening of segment length were 60 μm for IS (p = 0.017) and 80 μm for OS (p < 0.001)

Callosal tracts and patterns of hemispheric dominance: a combined fMRI and DTI study.

PubMed

Häberling, Isabelle S; Badzakova-Trajkov, Gjurgjica; Corballis, Michael C

2011-01-15

Left-hemispheric dominance for language and right-hemispheric dominance for spatial processing are distinctive characteristics of the human brain. However, variations of these hemispheric asymmetries have been observed, with a minority showing crowding of both functions to the same hemisphere or even a mirror reversal of the typical lateralization pattern. Here, we used diffusion tensor imaging and functional magnetic imaging to investigate the role of the corpus callosum in participants with atypical hemispheric dominance. The corpus callosum was segmented according to the projection site of the underlying fibre tracts. Analyses of the microstructure of the identified callosal segments revealed that atypical hemispheric dominance for language was associated with high anisotropic diffusion through the corpus callosum as a whole. This effect was most evident in participants with crowding of both functions to the right. The enhanced anisotropic diffusion in atypical hemispheric dominance implies that in these individuals the two hemispheres are more heavily interconnected. Copyright © 2010 Elsevier Inc. All rights reserved.

Correlation between corpus callosum sub-segmental area and cognitive processes in school-age children.

PubMed

Moreno, Martha Beatriz; Concha, Luis; González-Santos, Leopoldo; Ortiz, Juan Jose; Barrios, Fernando Alejandro

2014-01-01

We assessed the relationship between structural characteristics (area) and microstructure (apparent diffusion coefficient; ADC) of the corpus callosum (CC) in 57 healthy children aged 7.0 to 9.1 years, with diverse cognitive and academic abilities as well as executive functions evaluated with a neuropsychological battery for children. The CC was manually delineated and sub-segmented into six regions, and their ADC and area were measured. There were no significant differences between genders in the callosal region area or in ADC. The CC area and ADC, mainly of anterior regions, correlated with different cognitive abilities for each gender. Our results suggest that the relationship between cognitive abilities and CC characteristics is different between girls and boys and between the anterior and posterior regions of the CC. Furthermore, these findings strenghten the idea that regardless of the different interhemispheric connectivity schemes per gender, the results of cognitive tasks are very similar for girls and boys throughout childhood.

Correlation between Corpus Callosum Sub-Segmental Area and Cognitive Processes in School-Age Children

PubMed Central

Moreno, Martha Beatriz; Concha, Luis; González-Santos, Leopoldo; Ortiz, Juan Jose; Barrios, Fernando Alejandro

2014-01-01

We assessed the relationship between structural characteristics (area) and microstructure (apparent diffusion coefficient; ADC) of the corpus callosum (CC) in 57 healthy children aged 7.0 to 9.1 years, with diverse cognitive and academic abilities as well as executive functions evaluated with a neuropsychological battery for children. The CC was manually delineated and sub-segmented into six regions, and their ADC and area were measured. There were no significant differences between genders in the callosal region area or in ADC. The CC area and ADC, mainly of anterior regions, correlated with different cognitive abilities for each gender. Our results suggest that the relationship between cognitive abilities and CC characteristics is different between girls and boys and between the anterior and posterior regions of the CC. Furthermore, these findings strenghten the idea that regardless of the different interhemispheric connectivity schemes per gender, the results of cognitive tasks are very similar for girls and boys throughout childhood. PMID:25170897

Estimation of local stresses and elastic properties of a mortar sample by FFT computation of fields on a 3D image

DOE Office of Scientific and Technical Information (OSTI.GOV)

Escoda, J.; Departement Materiaux et Mecanique des Composants, Electricite de France, Moret-sur-Loing; Willot, F., E-mail: francois.willot@ensmp.f

2011-05-15

This study concerns the prediction of the elastic properties of a 3D mortar image, obtained by micro-tomography, using a combined image segmentation and numerical homogenization approach. The microstructure is obtained by segmentation of the 3D image into aggregates, voids and cement paste. Full-fields computations of the elastic response of mortar are undertaken using the Fast Fourier Transform method. Emphasis is made on highly-contrasted properties between aggregates and matrix, to anticipate needs for creep or damage computation. The representative volume element, i.e. the volume size necessary to compute the effective properties with a prescribed accuracy, is given. Overall, the volumes usedmore » in this work were sufficient to estimate the effective response of mortar with a precision of 5%, 6% and 10% for contrast ratios of 100, 1000 and 10,000, resp. Finally, a statistical and local characterization of the component of the stress field parallel to the applied loading is carried out.« less

Trabecular Bone Strength Predictions of HR-pQCT and Individual Trabeculae Segmentation (ITS)-Based Plate and Rod Finite Element Model Discriminate Postmenopausal Vertebral Fractures

PubMed Central

Liu, X. Sherry; Wang, Ji; Zhou, Bin; Stein, Emily; Shi, Xiutao; Adams, Mark; Shane, Elizabeth; Guo, X. Edward

2013-01-01

While high-resolution peripheral quantitative computed tomography (HR-pQCT) has advanced clinical assessment of trabecular bone microstructure, nonlinear microstructural finite element (μFE) prediction of yield strength by HR-pQCT voxel model is impractical for clinical use due to its prohibitively high computational costs. The goal of this study was to develop an efficient HR-pQCT-based plate and rod (PR) modeling technique to fill the unmet clinical need for fast bone strength estimation. By using individual trabecula segmentation (ITS) technique to segment the trabecular structure into individual plates and rods, a patient-specific PR model was implemented by modeling each trabecular plate with multiple shell elements and each rod with a beam element. To validate this modeling technique, predictions by HR-pQCT PR model were compared with those of the registered high resolution μCT voxel model of 19 trabecular sub-volumes from human cadaveric tibiae samples. Both Young’s modulus and yield strength of HR-pQCT PR models strongly correlated with those of μCT voxel models (r2=0.91 and 0.86). Notably, the HR-pQCT PR models achieved major reductions in element number (>40-fold) and CPU time (>1,200-fold). Then, we applied PR model μFE analysis to HR-pQCT images of 60 postmenopausal women with (n=30) and without (n=30) a history of vertebral fracture. HR-pQCT PR model revealed significantly lower Young’s modulus and yield strength at the radius and tibia in fracture subjects compared to controls. Moreover, these mechanical measurements remained significantly lower in fracture subjects at both sites after adjustment for aBMD T-score at the ultradistal radius or total hip. In conclusion, we validated a novel HR-pQCT PR model of human trabecular bone against μCT voxel models and demonstrated its ability to discriminate vertebral fracture status in postmenopausal women. This accurate nonlinear μFE prediction of HR-pQCT PR model, which requires only seconds of desktop computer time, has tremendous promise for clinical assessment of bone strength. PMID:23456922

11. Photocopy of 1906 photograph. Glass negative in Paul A. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

11. Photocopy of 1906 photograph. Glass negative in Paul A. Kohl's office, Missouri Botanical Garden. CLOSE VIEW OF LINNAEUS BUST - Missouri Botanical Garden, Linnaean House, 2345 Tower Grove Avenue, Saint Louis, Independent City, MO

76 FR 8656 - Safety Zone; Miami International Triathlon, Bayfront Park, Miami, FL

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-15

...-mail Lieutenant Paul A. Steiner, Sector Miami Prevention Department, Coast Guard; telephone 305-535-8724, e-mail Paul.A.Steiner@uscg.mil . If you have questions on viewing the docket, call Renee V...

Coastal Imaging Spectroscopy

DTIC Science & Technology

2006-09-30

Year, Semi-Finalist, Florida Environmental Research Institute, W. Paul Bissett, Ph.D., Executive Director, Greater Tampa Chamber of Commerce . 2004...Small Business of the Year, -Finalist, Florida Environmental Research Institute, W. Paul Bissett, Ph.D., Executive Director, Greater Tampa Chamber of Commerce .

Sun-Earth Day WEBCAST - NASA TV; Host Paul Mortfield, Astronomer Stanford Solar Center and visiting

NASA Technical Reports Server (NTRS)

2002-01-01

Sun-Earth Day WEBCAST - NASA TV; Host Paul Mortfield, Astronomer Stanford Solar Center and visiting students from San Francisco Bay Area Schools Documentation Technology Branch Video communications van (code-JIT)

Paul Hill d/b/a Alternative Energy Windows and Siding

EPA Pesticide Factsheets

Paul Hill d/b/a Alternative Energy Windows and Siding (the Company) is located in Concord, New Hampshire. The settlement involves renovation activities conducted at property constructed prior to 1978, located in Concord, New Hampshire.

Senate Confirmation Hearing IG

NASA Image and Video Library

2009-10-14

Paul K. Martin, nominee for Inspector General for NASA, answers questions during his confirmation hearing in front of the Senate Committee on Commerce, Science and Transportation, Thursday, Oct. 15, 2009, on Capitol Hill in Washington. Photo Credit: (NASA/Paul E. Alers)

Automated pixel-wise brain tissue segmentation of diffusion-weighted images via machine learning.

PubMed

Ciritsis, Alexander; Boss, Andreas; Rossi, Cristina

2018-04-26

The diffusion-weighted (DW) MR signal sampled over a wide range of b-values potentially allows for tissue differentiation in terms of cellularity, microstructure, perfusion, and T 2 relaxivity. This study aimed to implement a machine learning algorithm for automatic brain tissue segmentation from DW-MRI datasets, and to determine the optimal sub-set of features for accurate segmentation. DWI was performed at 3 T in eight healthy volunteers using 15 b-values and 20 diffusion-encoding directions. The pixel-wise signal attenuation, as well as the trace and fractional anisotropy (FA) of the diffusion tensor, were used as features to train a support vector machine classifier for gray matter, white matter, and cerebrospinal fluid classes. The datasets of two volunteers were used for validation. For each subject, tissue classification was also performed on 3D T 1 -weighted data sets with a probabilistic framework. Confusion matrices were generated for quantitative assessment of image classification accuracy in comparison with the reference method. DWI-based tissue segmentation resulted in an accuracy of 82.1% on the validation dataset and of 82.2% on the training dataset, excluding relevant model over-fitting. A mean Dice coefficient (DSC) of 0.79 ± 0.08 was found. About 50% of the classification performance was attributable to five features (i.e. signal measured at b-values of 5/10/500/1200 s/mm 2 and the FA). This reduced set of features led to almost identical performances for the validation (82.2%) and the training (81.4%) datasets (DSC = 0.79 ± 0.08). Machine learning techniques applied to DWI data allow for accurate brain tissue segmentation based on both morphological and functional information. Copyright © 2018 John Wiley & Sons, Ltd.

Reconstruction of irradiated bone segmental defects with a biomaterial associating MBCP+(R), microstructured collagen membrane and total bone marrow grafting: an experimental study in rabbits.

PubMed

Jégoux, Franck; Goyenvalle, Eric; Cognet, Ronan; Malard, Olivier; Moreau, Francoise; Daculsi, Guy; Aguado, Eric

2009-12-15

The bone tissue engineering models used today are still a long way from any oncologic application as immediate postimplantation irradiation would decrease their osteoinductive potential. The aim of this study was to reconstruct a segmental critical size defect in a weight-bearing bone irradiated after implantation. Six white New Zealand rabbits were immediately implanted with a biomaterial associating resorbable collagen membrane EZ(R) filled and micro-macroporous biphasic calcium phosphate granules (MBCP+(R)). After a daily schedule of radiation delivery, and within 4 weeks, a total autologous bone marrow (BM) graft was injected percutaneously into the center of the implant. All the animals were sacrificed at 16 weeks. Successful osseous colonization was found to have bridged the entire length of the defects. Identical distribution of bone ingrowth and residual ceramics at the different levels of the implant suggests that the BM graft plays an osteoinductive role in the center of the defect. Periosteum-like formation was observed at the periphery, with the collagen membrane most likely playing a role. This model succeeded in bridging a large segmental defect in weight-bearing bone with immediate postimplantation fractionated radiation delivery. This has significant implications for the bone tissue engineering approach to patients with cancer-related bone defects.

12. Photocopy of 1906 photograph. Glass negative in Paul A. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

12. Photocopy of 1906 photograph. Glass negative in Paul A. Kohl's office, Missouri Botanical Garden. BUST OF ASA GRAY AT SOUTH ENTRANCE - Missouri Botanical Garden, Linnaean House, 2345 Tower Grove Avenue, Saint Louis, Independent City, MO

13. Photocopy of 1906 photograph. Glass negative in Paul A. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

13. Photocopy of 1906 photograph. Glass negative in Paul A. Kohl's office, Missouri Botanical Garden. BUST OF THOMAS NUTTALL AT SOUTH ENTRANCE - Missouri Botanical Garden, Linnaean House, 2345 Tower Grove Avenue, Saint Louis, Independent City, MO

RadNet Air Data From St. Paul, MN

EPA Pesticide Factsheets

This page presents radiation air monitoring and air filter analysis data for St. Paul, MN from EPA's RadNet system. RadNet is a nationwide network of monitoring stations that measure radiation in air, drinking water and precipitation.

Meet EPA Ecologist Paul Mayer, Ph.D.

EPA Pesticide Factsheets

EPA ecologist Paul Mayer, Ph.D. works in EPA's Groundwater and Ecosystem Restoration division where he studies riparian zones (the area along rivers and streams where the habitats are influenced by both the land and water) and stream restoration

Revised Mulliken Electronegativities I. Calculation and Conversion to Pauling Units.

ERIC Educational Resources Information Center

Bratsch, Steven G.

1988-01-01

Discusses a revision and extension of the Mulliken electronegativity scale to consider 50 elements. Describes the calculation of valence-state promotion energies and Mulliken atomic electronegativities and the conversion of Mulliken electronegativities to Pauling units. (CW)

Publications - GMC 219 | Alaska Division of Geological & Geophysical

Science.gov Websites

Paul G. Benedum Nulato Unit #1 well Authors: Murphy, J.M. Publication Date: 1993 Publisher: Alaska , Apatite fission track data of cuttings (1,000-11,500') from the Paul G. Benedum Nulato Unit #1 well

A more realistic disc herniation model incorporating compression, flexion and facet-constrained shear: a mechanical and microstructural analysis. Part II: high rate or 'surprise' loading.

PubMed

Shan, Zhi; Wade, Kelly R; Schollum, Meredith L; Robertson, Peter A; Thambyah, Ashvin; Broom, Neil D

2017-10-01

Part I of this study explored mechanisms of disc failure in a complex posture incorporating physiological amounts of flexion and shear at a loading rate considerably lower than likely to occur in a typical in vivo manual handling situation. Given the strain-rate-dependent mechanical properties of the heavily hydrated disc, loading rate will likely influence the mechanisms of disc failure. Part II investigates the mechanisms of failure in healthy discs subjected to surprise-rate compression while held in the same complex posture. 37 motion segments from 13 healthy mature ovine lumbar spines were compressed in a complex posture intended to simulate the situation arising when bending and twisting while lifting a heavy object at a displacement rate of 400 mm/min. Seven of the 37 samples reached the predetermined displacement prior to a reduction in load and were classified as early stage failures, providing insight to initial areas of disc disruption. Both groups of damaged discs were then analysed microstructurally using light microscopy. The average failure load under high rate complex loading was 6.96 kN (STD 1.48 kN), significantly lower statistically than for low rate complex loading [8.42 kN (STD 1.22 kN)]. Also, unlike simple flexion or low rate complex loading, direct radial ruptures and non-continuous mid-wall tearing in the posterior and posterolateral regions were commonly accompanied by disruption extending to the lateral and anterior disc. This study has again shown that multiple modes of damage are common when compressing a segment in a complex posture, and the load bearing ability, already less than in a neutral or flexed posture, is further compromised with high rate complex loading.

In vivo laser confocal microscopic analysis of murine cornea and lens microstructures.

PubMed

Yuasa, Masashi; Kobayashi, Akira; Yokogawa, Hideaki; Sugiyama, Kazuhisa

2008-01-01

The purpose of the current study is to investigate in vivo microstructures of anterior segments of normal murine eyes by new-generation in vivo laser confocal microscopy. Twenty-six corneas and lenses from 13 mice were analyzed by in vivo laser confocal microscopy. Murine corneal superficial cells formed a polygonal cell pattern, with a mean cell density of 577 +/- 115 cells/mm2 (mean +/- standard deviation). Corneal basal epithelial cells had dark cytoplasm and were closely organized (9,312 +/- 1,777 cells/mm2). Sub-basal nerve fiber bundles were arranged in a whorl pattern, with both clockwise and counter-clockwise patterns. In the stroma, keratocytes were observed as numerous reflective stellate structures. The endothelial cells were organized in a honeycomb pattern (2,463 +/- 292 cells/mm2). Deeper inside the eye, murine lens epithelial cells were organized in a regular pattern (4,168 +/- 636 cells/mm2) and numerous lens fibers were observed. In vivo laser confocal microscopy can provide high-resolution images of all corneal layers and lens structures of mice without sacrificing animals or tissue preparation.

Chinese wine classification system based on micrograph using combination of shape and structure features

NASA Astrophysics Data System (ADS)

Wan, Yi

2011-06-01

Chinese wines can be classification or graded by the micrographs. Micrographs of Chinese wines show floccules, stick and granule of variant shape and size. Different wines have variant microstructure and micrographs, we study the classification of Chinese wines based on the micrographs. Shape and structure of wines' particles in microstructure is the most important feature for recognition and classification of wines. So we introduce a feature extraction method which can describe the structure and region shape of micrograph efficiently. First, the micrographs are enhanced using total variation denoising, and segmented using a modified Otsu's method based on the Rayleigh Distribution. Then features are extracted using proposed method in the paper based on area, perimeter and traditional shape feature. Eight kinds total 26 features are selected. Finally, Chinese wine classification system based on micrograph using combination of shape and structure features and BP neural network have been presented. We compare the recognition results for different choices of features (traditional shape features or proposed features). The experimental results show that the better classification rate have been achieved using the combinational features proposed in this paper.

Hepatitis B Shots Are Recommended for All New Babies

MedlinePlus

... Centers for Disease Control and Prevention Saint Paul, Minnesota • 651-647-9009 • www. immunize. org • www. vaccineinformation. ... Centers for Disease Control and Prevention Saint Paul, Minnesota • 651-647-9009 • www.immunize.org • www.vaccineinformation. ...

79. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

79. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, ca. 1890, #741.) ALEXANDER RAMSEY HOUSE, ca. 1890 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

76. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

76. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, 1860. #22358.) UPPER LEVEE FROM CHESTNUT STREET, 1860 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

74. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

74. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, 1896. #35105.) FIRST ROBERT STREET BRIDGE, ca. 1896 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

Paul Carlson | Center for Cancer Research

Cancer.gov

Paul Carlson, Ph.D. March 28 Principal Investigator Laboratory of Mucosal Pathogens and Cellular Immunology Center for Biologics Evaluation and Research (CBER), FDA Topic:  "Research and Regulation of novel biologic products at the FDA's Center for Biologics Evaluation and Research"

St. Paul central corridor study : Pierce Butler industrial redevelopment parkway

DOT National Transportation Integrated Search

2003-07-01

At present, development in the St. Paul Central Corridor is occurring piecemeal and lacks an integrative vision. This study's aim was to devise design approaches that create a district which integrates light industrial job creation and retention with...

27. Photocopy of August 25, 1921 photograph by Paul A. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

27. Photocopy of August 25, 1921 photograph by Paul A. Kohl. Glass Negative Box IX, Tower Grove, Missouri Botanical Garden. ITALIAN GARDEN BY JOHN NOYES, LOOKING WEST - Missouri Botanical Garden, 2345 Tower Grove Avenue, Saint Louis, Independent City, MO

76 FR 29642 - Special Local Regulations; Miami Super Boat Grand Prix, Miami Beach, FL

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-23

... INFORMATION CONTACT: If you have questions on this rule, call or e-mail Lieutenant Paul A. Steiner, Sector Miami Prevention Department, Coast Guard; telephone 305-535-8724, e-mail Paul.A.Steiner@uscg.mil . If...

Rotating Saddle Paul Trap.

ERIC Educational Resources Information Center

Rueckner, Wolfgang; And Others

1995-01-01

Describes a demonstration in which a ball is placed in an unstable position on a saddle shape. The ball becomes stable when it is rotated above some threshold angular velocity. The demonstration is a mechanical analog of confining a particle in a "Paul Trap". (DDR)

77 FR 48497 - Sunshine Act Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-14

...--Yes Michael Meehan--Yes Dennis Mulhaupt--Yes Dana Perino--Yes Tara Sonenshine--Yes Statements from... Maryjean Buhler, Chief Financial Officer Paul Kollmer-Dorsey, Deputy General Counsel and Board Secretary... CONTACT PERSON FOR MORE INFORMATION: Persons interested in obtaining more information should contact Paul...

STS-134 Tweetup

NASA Image and Video Library

2011-04-28

Heather Paul, a project engineer for Johnson Space Center, talks about space suit technology during the STS-134 Tweetup, Thursday, April 28, 2011, at Kennedy Space Center in Cape Canaveral, Fla. About 150 NASA Twitter followers attended the event. Photo Credit: (NASA/Paul E. Alers)

Minutes of the Explosives Safety Seminar (22nd) Held in Anaheim, California on 26-28 August 1986. Volume 1

DTIC Science & Technology

1986-08-01

105 Paul D. Smith and Theodore R. Crawford BL.AST VENTING FROM A (UIBICLE 119 Y. Kivity and S. Fellur PRESSURE/TEMPERATURE DECAY IN I11 EXPLOSION...EFFECTIVENESS OF TH 5-1300 CUBICLES ADDED TO EXISTING 201 BUILDINGS Paul M. LaHoudc DESKTOP COWffRS AND EXPLOSIVE SAFU 239 John M.Ftrritto OPTIMAL DESIGN OF...EXPLOSIVES saFwlY ON READINESS - THE 799 PRICE OF SAFETY " BG Paul L. Greenberg N) NAVAL ARMAMENT DEW FUR THE ROYAL MUMALIAN NAVY 805 Comm -W k-wroughs

Asymptotic solution of Fokker-Planck equation for plasma in Paul traps

DOE Office of Scientific and Technical Information (OSTI.GOV)

Shah, Kushal

2010-05-15

An exact analytic solution of the Vlasov equation for the plasma distribution in a Paul trap is known to be a Maxwellian and thus, immune to collisions under the assumption of infinitely fast relaxation [K. Shah and H. S. Ramachandran, Phys. Plasmas 15, 062303 (2008)]. In this paper, it is shown that even for a more realistic situation of finite time relaxation, solutions of the Fokker-Planck equation lead to an equilibrium solution of the form of a Maxwellian with oscillatory temperature. This shows that the rf heating observed in Paul traps cannot be caused due to collisional effects alone.

Diagnostic Interference: People’s Use of Information in Incomplete Bayesian World Problems

DTIC Science & Technology

1990-07-01

them was the one who did it. Stephen and Paul are 5 year old twins. One afternoon their mother hired a new babysitter so she could go out to do errands...Paul broke the lamp? _ Reliability. Stephen’s and Paul’s mother enjoys dressing them alike. Before she left, she had said to the babysitter " New ...complementarity); and it one already has a degree of belief p(H) in proposition H, and one is given new evidence E pertinent to the truth of H, one can use a

Headache classification and the Bible: Was St Paul's thorn in the flesh migraine?

PubMed

Göbel, H; Isler, H; Hasenfratz, H P

1995-06-01

The conversion of Saul to Paul was a major event in the history of Western culture. Compared with its impact, any medical comments may seem redundant, but they have kept their place in the literature for many centuries. The flashing light that caused Saul to fall is often explained as solar retinopathy or keratitis, a seizure, or even a hysterical fit. These interpretations propose either a trivial injury or disease that would interfere with mental health. Neither version is quite compatible with the dramatic dimension of the event and with Paul's later achievements and sufferings. In later years, Paul became a great manager, preacher and writer who was able to carry on under any kind of duress, though not without very painful reactions. He was suffering from bouts of unilateral headache, and also from a chronic eye condition which gave great trouble to his followers but did not cause lasting damage; the descriptions fulfil the criteria for migraine without aura of the 1988 Headache Classification. If the flashing light that caused Paul to fall down is interpreted as a visual migraine aura, with the additional symptoms of "not seeing" or photophobia and anorexia, it falls into place with his later history of migraine.

77. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

77. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, 1859. #377. Photographer: Illingworth.) LOWER LEVEE FROM JACKSON STREET, 1859 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

65. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

65. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, 1889. #37682.) VIEW TO NORTH, SHOWING SPAN NOS. 6-24, 1889 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

69. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

69. Photocopy of photograph (original print in the Minnesota Historical society, St. Paul, Minnesota, 1984. #32375.) VIEW TO WEST, SHOWING DAMAGED BRIDGE AFTER CYCLONE. 1904. - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

77 FR 20820 - Change in Bank Control Notices; Acquisitions of Shares of a Bank or Bank Holding Company

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-06

... Trust, and Gloria Foley, all of Lovington, Illinois, and Paul Michael Hrvol, Jr. and Paul Michael Hrvol... Bancorp, Inc. and thereby indirectly control Hardware State Bank, both of Lovington, Illinois. Board of...

44. Photograph of original sketch by Paul Cloyd, Historical Architect, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

44. Photograph of original sketch by Paul Cloyd, Historical Architect, Denver Service Center, National Park Service, Denver, Colorado, dated March 1985. EVOLUTION OF GRAND CANYON WATER RECLAMATION PLANT AS IT STANDS TODAY. - Water Reclamation Plant, Grand Canyon, Coconino County, AZ

Physical and Biological Modes of Thought in the Chemistry of Linus Pauling

NASA Astrophysics Data System (ADS)

Nye, Mary Jo

No figure in modern chemistry better exemplifies than Linus Pauling (1901-1994) the intersections of the scientific disciplines of chemistry, physics, and biology nor the roles of physical and biological modes of thought in the 'central science' of chemistry.

1. Photocopy of photograph (original print #17 located in ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

1. Photocopy of photograph (original print #17 - located in Pope & Talbot Archives. Port Gamble, WA). Unknown Photographer, September 1906. View of St. Paul's Episcopal Church, facing southwest from Rainier Avenue. - St. Paul's Episcopal Church, Rainier Avenue, Port Gamble, Kitsap County, WA

28. Photocopy of August 25, 1921 photograph by Paul A, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

28. Photocopy of August 25, 1921 photograph by Paul A, Kohl. Glass Negative Box IX, Tower Grove, Missouri Botanical Garden. ITALIAN GARDEN AND FLORAL DISPLAY HOUSE, LOOKING NORTH - Missouri Botanical Garden, 2345 Tower Grove Avenue, Saint Louis, Independent City, MO

73. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

73. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, 1867. #MR2.9 SP4.2/rll.) FIRST WABASHA STREET BRIDGE, 1867 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

66. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

66. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, ca. 1925. #19657.) VIEW TO NORTHWEST, SHOWING SPAN NOS. 21 TO 26 - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

75 FR 38770 - Siskiyou, OR Resource Advisory Committee

Federal Register 2010, 2011, 2012, 2013, 2014

2010-07-06

.... Written comments should be sent to Paul Galloway, Medford Interagency Office, 3040 Biddle Road, Medford... facilitate entry into the building. FOR FURTHER INFORMATION CONTACT: Paul Galloway, Acting Public Affairs... the opportunity to address the Committee during that session. Dated: June 24, 2010. Scott D. Conroy...

Parallel Narrative Structure in Paul Harding's "Tinkers"

ERIC Educational Resources Information Center

Çirakli, Mustafa Zeki

2014-01-01

The present paper explores the implications of parallel narrative structure in Paul Harding's "Tinkers" (2009). Besides primarily recounting the two sets of parallel narratives, "Tinkers" also comprises of seemingly unrelated fragments such as excerpts from clock repair manuals and diaries. The main stories, however, told…

Line Designs Inspired by Paul Klee

ERIC Educational Resources Information Center

Blanchette, Lisa

2009-01-01

In this lesson, students learn about line, shape, color, mixed media and abstraction, while being introduced to Swiss artist, Paul Klee (1879-1940). This lesson works well with a variety of age levels and abilities and could also be used to teach analogous or triad color schemes.

Electron Microscopy of Tungsten Disulphide Inorganic Nanomaterials

DTIC Science & Technology

2009-09-01

cylindrical molecule similar to a carbon nanotube. Inorganic nanotubes have been observed in some mineral deposits. Linus Pauling suggested the...diffraction pattern was due to the carbon coating. Figure 6 SAED taken from the single nanotube shown in figure 5 REFERENCES 1. Pauling , L; "The

View of the PAVE PAWS radar from approach along Spencer ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

View of the PAVE PAWS radar from approach along Spencer Paul Road, looking northwest - Beale Air Force Base, Perimeter Acquisition Vehicle Entry Phased-Array Warning System, End of Spencer Paul Road, north of Warren Shingle Road (14th Street), Marysville, Yuba County, CA

Charged particle capturing in air flow by linear Paul trap

NASA Astrophysics Data System (ADS)

Lapitsky, D. S.; Filinov, V. S.; Vladimirov, V. I.; Syrovatka, R. A.; Vasilyak, L. M.; Pecherkin, V. Ya; Deputatova, L. V.

2018-01-01

The paper presents the simulation results of micro- and nanoparticle capturing in an air flows by linear Paul traps in assumption that particles gain their charges in corona discharge, its electric field strength is restricted by Paschen equation and spherical shape of particles.

Predicting Upwelling Radiance on the West Florida Shelf

DTIC Science & Technology

2005-09-30

Business of the Year, Florida Environmental Research Institute, W. Paul Bissett, Ph.D., Executive Director, Greater Tampa Chamber of Commerce . Finalist...2004 Small Business of the Year, Florida Environmental Research Institute, W. Paul Bissett, Ph.D., Executive Director, Greater Tampa Chamber of Commerce . 9

In Memoriam: Paul J. Lioy

EPA Science Inventory

Exposure Science has lost one of its founders and intellectual champions. Dr. Paul Lioy unexpectedly passed away on July 8, 2015 at the age of 68 years. The world has been left a far better place thanks to Dr. Lioy’s vision and creativity, enormous scientific contributions,...

Colloquy to Paul Musset

DOE Office of Scientific and Technical Information (OSTI.GOV)

None

2007-12-13

En honneur de Paul Musset il a été décidé de faire plutôt un colloque scientifique à la place d'une cérémonie. Plusieurs personnes temoignent de leurs estime et amitié pour ce physicien et ses activités

76 FR 1532 - Determinations of Attainment by the Applicable Attainment Date for the Hayden, Nogales, Paul Spur...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-01-11

... indicated that we plan to address the PM 10 needs for Nogales and Paul Spur/Douglas areas over the next few... certain columns and rows and thereby causes a mismatch between concentrations and the corresponding years...

SEDIMENT DATA - ST. PAUL WATERWAY - TACOMA, WA - 1996 MONITORING DATA

EPA Science Inventory

Benthic Infauna Monitoring Data Files are Excel-format spreadsheet files which contain data presented in the St. Paul Waterway Area Remedial Action and Habitat Restoration Project, 1996 Monitoring Report. The files can be viewed directly or readily downlo aded and read into most ...

Historical review: another 50th anniversary--new periodicities in coiled coils.

PubMed

Gruber, Markus; Lupas, Andrei N

2003-12-01

In 1953, Francis Crick and Linus Pauling both proposed models of supercoiled alpha helices ('coiled coils') for the structure of keratin. These were the first attempts at modelling the tertiary structure of a protein. Crick emphasized the packing mode of the side-chains ('knobs-into-holes'), which required a periodicity of seven residues over two helical turns (7/2) and a supercoil in the opposite sense of the constituent helices. By contrast, Pauling envisaged a broader set of periodicities (4/1, 7/2, 18/5, 15/4, 11/3) and supercoils of both senses. Crick's model became canonical and the 'heptad repeat' essentially synonymous with coiled coils, but 50 years later new crystal structures and protein sequences show that the less common periodicities envisaged by Pauling also occur in coiled coils, adding a variant packing mode ('knobs-to-knobs') to the standard model. Pauling's laboratory notebooks suggest that he searched unsuccessfully for this packing mode in 1953.

Linus Pauling's "molecular diseases": between history and memory.

PubMed

Strasser, Bruno J

2002-08-30

In 1949, Linus Pauling and his collaborators published a study in the journal Science entitled "Sickle Cell Anemia, a Molecular Disease." In this now classic study, they showed that hemoglobin from patients suffering from sickle cell anemia has a different electrical charge than hemoglobin from healthy individuals. This result demonstrated for the first time that an abnormal protein could be causally linked to a disease, and that genes determined the structure of proteins. This report made headline news and had a powerful impact on both the biomedical community and the general public. Fifty years later, this study is discussed in almost every medical and biological textbook and has became a favorite example in editorials to illustrate the progress of biomedical research. This article explores the history of Pauling's sickle cell anemia and its subsequent integration in different collective memories, up to the present day. It also discusses the function of the collective memories of Pauling's discovery for contemporary biomedical research. Copyright 2002 Wiley-Liss, Inc.

Are we hammering square pegs into round holes? An investigation of the meta-analyses of reading research with students who are d/Deaf or hard of hearing and students who are hearing.

PubMed

Wang, Ye; Williams, Cheri

2014-01-01

In a qualitative meta-analysis, the researchers systematically reviewed qualitative and quantitative meta-analyses on reading research with PK-12 students published after the 2000 National Reading Panel (NRP) report. Eleven qualitative and 39 quantitative meta-analyses were reviewed examining reading research with typically developing hearing students, special education hearing students (including English Language Learners), and d/Deaf or hard of hearing (d/Dhh) students. Generally, the meta-analysis yielded findings similar to and corroborative of the NRP's. Contradictory results (e.g., regarding the role of rhyme awareness in reading outcomes) most often resulted from differing definitions of interventions and their measurements. The analysis provided evidence of several instructional approaches that support reading development. On the basis of the qualitative similarity hypothesis (Paul, 2010, 2012; Paul & Lee, 2010; Paul & Wang, 2012; Paul, Wang, & Williams, 2013), the researchers argue that these instructional strategies also should effectively support d/Dhh children's reading development.

Associations Between White Matter Microstructure and Infants’ Working Memory

PubMed Central

Short, Sarah J.; Elison, Jed T.; Goldman, Barbara Davis; Styner, Martin; Gu, Hongbin; Connelly, Mark; Maltbie, Eric; Woolson, Sandra; Lin, Weili; Gerig, Guido; Reznick, J. Steven; Gilmore, John H.

2013-01-01

Working memory emerges in infancy and plays a privileged role in subsequent adaptive cognitive development. The neural networks important for the development of working memory during infancy remain unknown. We used diffusion tensor imaging (DTI) and deterministic fiber tracking to characterize the microstructure of white matter fiber bundles hypothesized to support working memory in 12-month-old infants (n=73). Here we show robust associations between infants’ visuospatial working memory performance and microstructural characteristics of widespread white matter. Significant associations were found for white matter tracts that connect brain regions known to support working memory in older children and adults (genu, anterior and superior thalamic radiations, anterior cingulum, arcuate fasciculus, and the temporal-parietal segment). Better working memory scores were associated with higher FA and lower RD values in these selected white matter tracts. These tract-specific brain-behavior relationships accounted for a significant amount of individual variation above and beyond infants’ gestational age and developmental level, as measured with the Mullen Scales of Early Learning. Working memory was not associated with global measures of brain volume, as expected, and few associations were found between working memory and control white matter tracts. To our knowledge, this study is among the first demonstrations of brain-behavior associations in infants using quantitative tractography. The ability to characterize subtle individual differences in infant brain development associated with complex cognitive functions holds promise for improving our understanding of normative development, biomarkers of risk, experience-dependent learning and neuro-cognitive periods of developmental plasticity. PMID:22989623

Physics and our View of the World

NASA Astrophysics Data System (ADS)

Hilgevoord, Jan

1994-11-01

Foreword; 1. Introduction JAN HILGEVOORD; 2. Questioning the answers GERARD T. HOOFT; 3. Theories of everything JOHN BARROW; 4. The scientific view of the world DENNIS DIEKS; 5. Enlarging the world ERNAN McMULLIN; 6. The world of empiricism BAS VAN FRAASSEN; 7. Has the scientific view of the world a special status compared with other views? PAUL FEYERABEND; 8. Quantum theory and our view of the world PAUL FEYERABEND; 9. Interpretation of science - science as interpretation BAS VAN FRAASSEN; 10. Problems in debates about physics and religion WILLEM DREES; 11. The mind of God PAUL DAVIES; 12. The sources of models for God: metaphysics or metaphor? MARY HESSE; 13. Discussion.

49 CFR Appendix B to Part 604 - Reasons for Removal

Code of Federal Regulations, 2012 CFR

2012-10-01

... honest mistake. Black's Law Dictionary, Revised Fourth Edition, West Publishing Company, St. Paul, Minn... performing it. Black's Law Dictionary, Revised Fourth Edition, West Publishing Company, St. Paul, Minn., 1968... force. In addition, no other policy of insurance has taken its place. Black's Law Dictionary, Revised...

49 CFR Appendix B to Part 604 - Reasons for Removal

Code of Federal Regulations, 2013 CFR

2013-10-01

... honest mistake. Black's Law Dictionary, Revised Fourth Edition, West Publishing Company, St. Paul, Minn... performing it. Black's Law Dictionary, Revised Fourth Edition, West Publishing Company, St. Paul, Minn., 1968... force. In addition, no other policy of insurance has taken its place. Black's Law Dictionary, Revised...

49 CFR Appendix B to Part 604 - Reasons for Removal

Code of Federal Regulations, 2014 CFR

2014-10-01

... honest mistake. Black's Law Dictionary, Revised Fourth Edition, West Publishing Company, St. Paul, Minn... performing it. Black's Law Dictionary, Revised Fourth Edition, West Publishing Company, St. Paul, Minn., 1968... force. In addition, no other policy of insurance has taken its place. Black's Law Dictionary, Revised...

Passings to note: Paul Michael Packman, MD; S. Charles Schulz, MD.

PubMed

Black, Donald W

2018-02-01

One of the keys to the success of Annals of Clinical Psychiatry has always been the tireless efforts of our dedicated Editorial Board. We recently lost 2 longtime Editorial Board members, Drs. Paul Michael Packman and S. Charles Schulz. Both will be greatly missed.

Classical Sax: Conversation with Paul Brodie.

ERIC Educational Resources Information Center

Row, David W.

1984-01-01

Paul Brodie, the most recorded concert saxophonist in the history of the instrument, talks about a number of topics, including his career, differences among saxophonists, mixing styles of playing, the effectiveness of music schools, and whether it is necessary to understand the structure of the piece being played. (RM)

The Carbon New Age

DTIC Science & Technology

2010-03-01

these allotropes show that they all have the same basic motif, namely, the benzene ring. Linus Pauling was one the first scientists to understand the...nature of these allotropes and in his 1950’s masterpiece “The Nature of the Chemical Bond”, Pauling describes graphite (the only allotrope that was

Deputy to the Commanding General

DTIC Science & Technology

2012-10-18

Kneller "The best way to have a good idea is to have a lot of ideas." — Dr. Linus Pauling "To raise new questions, new possibilities, to regard old...Development & Integration Directorate (CDID) Capability Portfolio Overview COL Courtney W. Paul 06 June 2012 MSCoE CDID Organization

Sixteen Textbook Authors Respond.

ERIC Educational Resources Information Center

Hewitt, John P.; And Others

1988-01-01

The articles on textbook publication written by Sheryl Fullerton and Franklin C. Graham were responded to by: John Hewitt, Henry Tischler, George Ritzer, Paul Baker, Erich Goode, D. Stanley Eitzen, Jon Shepard, Richard Schaefer, Caroline Persell, Beth Hess, Paul Zopf, Jr., Jeanne Ballantine, Duane Monette, Mary Ann Lamanna, John Macionis, and…

Center for Transportation Studies 24th annual transportation research conference, May 22-23, 2013, Saint Paul, Minnesota.

DOT National Transportation Integrated Search

2013-05-01

The University of Minnesotas Center for Transportation : Studies is pleased to present its 24th Annual Transportation : Research Conference, May 22-23, 2013. The conference will : be held at the Saint Paul RiverCentre, 175 West Kellogg : Boulevard...

A Response to Paul Stapleton's "Critiquing Research Methodology"

ERIC Educational Resources Information Center

Ross, Steven J.

2006-01-01

Paul Stapleton's (2006) critique of quantitative research brings to the surface some common interpretive problems arising when experimental and quasi-experimental research designs are compared. While Stapleton may be correct in pointing out the superiority of experimental research designs because they best eliminate the influence of extraneous…

Abiotic Remediation of Nitro-Aromatic Groundwater Contaminants by Zero-Valent Iron

DTIC Science & Technology

1994-03-18

Paul G. Tratnyek 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION REPORT NUMBER Department of Environmental Science N/A...REMEDIATION OF NITRO-AROMATIC GROUNDWATER CONTAMINANTS BY ZERO-VALENT IRON Abinash Agrmwal and Paul G. Tratnyek Department of Environmental Science and

49 CFR Appendix B to Part 604 - Reasons for Removal

Code of Federal Regulations, 2010 CFR

2010-10-01

... honest mistake. Black's Law Dictionary, Revised Fourth Edition, West Publishing Company, St. Paul, Minn... performing it. Black's Law Dictionary, Revised Fourth Edition, West Publishing Company, St. Paul, Minn., 1968... force. In addition, no other policy of insurance has taken its place. Black's Law Dictionary, Revised...

Quantitative characterization and comparison of precipitate and grain shape in Nickel -base superalloys using moment invariants

NASA Astrophysics Data System (ADS)

Callahan, Patrick Gregory

A fundamental objective of materials science and engineering is to understand the structure-property-processing-performance relationship. We need to know the true 3-D microstructure of a material to understand certain geometric properties of a material, and thus fulfill this objective. Focused ion beam (FIB) serial sectioning allows us to find the true 3-D microstructure of Ni-base superalloys. Once the true 3-D microstructure is obtained, an accurate quantitative description and characterization of precipitate and/or grain shapes is needed to understand the microstructure and describe it in an unbiased way. In this thesis, second order moment invariants, the shape quotient Q, a convexity measure relating the volume of an object to the volume of its convex hull, V/Vconv, and Gaussian curvature have been used to compare an experimentally observed polycrystalline IN100 microstructure to three synthetic microstructures. The three synthetic microstructures used different shape classes to produce starting grain shapes. The three shape classes are ellipsoids, superellipsoids, and the shapes generated when truncating a cube with an octahedron. The microstructures are compared using a distance measure, the Hellinger distance. The Hellinger distance is used to compare distributions of shape descriptors for the grains in each microstructure. The synthetic microstructure that has the smallest Hellinger distance, and so best matched the experimentally observed microstructure is the microstructure that used superellipsoids as a starting grain shape. While it has the smallest Hellinger distance, and is approaching realistic grain morphologies, the superellipsoidal microstructure is still not realistic. Second order moment invariants, Q, and V/V conv have also been used to characterize the γ' precipitate shapes from four experimental Ru-containing Ni-base superalloys with differences in alloying additions. The superalloys are designated UM-F9, UM-F18, UM-F19, and UM-F22. The different alloying additions in each sample cause differences in lattice misfit and γ' precipitate shape morphology, varying from spherical, to cuboidal, to intermediate morphologies. 3-D datasets from each alloy were collected via automated Focused Ion Beam (FIB) serial sectioning. Digital image processing methods are used to register, clean, and segment the images in each of the datasets in order to digitally reconstruct the microstructures in 3-D. The distributions of the shape descriptors of the γ' precipitates from each microstructure are compared using the Hellinger distance. The Hellinger distance determines if there are quantitative differences in the γ' precipitate morphologies, or if they are the same. It was found that comparing distributions of the second order affine moment invariant Ω 3 with the Hellinger distance is sufficient for recognizing that alloys have different compositions. The secondary γ' precipitate shapes in two Ni-based superalloys, one from a UM-F20 alloy with cuboidal precipitates, and one from a Rene-88 DT alloy with more complex dendritic precipitates, have been decomposed and reconstructed using 3-D Zernike functions, which are orthogonal over the unit ball; they can be used to decompose an arbitrary shape scaled to fit inside an embedding sphere into spherical harmonics. Relatively complex shapes can be decomposed into, and reconstructed from, 3-D Zernike functions. In this thesis we show the 3-D Zernike functions and a method to derive expressions for Zernike moments from the more familiar geometric moments. Then Zernike moment reconstructions up to order 20 of precipitates from the two Ni-base superalloys are presented. The Zernike moment reconstructions were characterized using second order moment invariants, and have yielded good reconstructions of cuboidal precipitates. More orders of Zernike moments may be needed to accurately reconstruct the dendritic precipitates. We also introduce the concept of moment invariant density maps to describe 3-D shapes using 2-D moment invariants. To do this we characterize 2-D sections of a 3-D microstructure using 2-D moment invariants. The statistical distribution of 2-D moment invariants from the sections are compared to a library of density maps produced from different shapes. The sectioning plane is random so each group of particles produces a statistical distribution of 2-D moments that can represent a microstructure. Then we show three example applications: determination of a 3-D shape by computing the Hellinger distance between moment invariant density maps derived from random 2-D section micrographs and the density map database; automated detection and quantification of rafting in cuboidal microstructures; and quantitative comparison of pairs of microstructures.

Paul Langerhans: a prilgrim "traveling" from functional histology to marine biology.

PubMed

Raica, Marius; Cimpean, Anca Maria

2017-06-01

The nineteenth century was the time of a real revolution in science and medicine. A lot of seminal discoveries in medicine and biology were done in this time, and many of them were coincident with the introduction of the compound microscope by Hermann van Deijl and the standard histological technique by Paul Ehrlich. The main tissue types and individual cells were characterized and originally classified more than hundred years ago, although less attention was paid to their basic functions. This was mainly due to the modality of tissue specimen processing that allowed particularly detailed descriptive studies. Even so, we can notice some attempts to correlate the structure with the function. The German scientist Paul Langerhans, well-known for the discovery of Langerhans islets of the pancreas and Langerhans cells from the epidermis, tried to change the conventional fate of morphological studies introducing in his works functional hypothesis based on traditional microscopic observations even from the beginning of his scientific career. Paul Langerhans was a complex personality of the second half of the nineteenth century, not only in medicine, but also in other fields of biology. In the present review, presented is the life and research activity of Paul Langerhans, not only because of the importance of his discoveries, but also for perspectives that were opened by these findings in unexpected fields of medicine and biology.

Paul Vallas for Sale

ERIC Educational Resources Information Center

Dessoff, Alan

2012-01-01

Veteran Superintendent Paul Vallas, who has led turnaround efforts in major urban districts in Chicago, Philadelphia and New Orleans, has started a new venture that he expects will broaden his reach and extend the reform movement. The Vallas Group, headed by Vallas, now interim superintendent of the Bridgeport (Connecticut) Public Schools, is…

70. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

70. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, 1904. #18613g. Photographer: Albert Munson) VIEW TO WEST, SHOWING FALSEWORK USED IN RECONTRUCTING THE HIGH BRIDGE, 1904. - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

Paul Zindel: Flirting with the Bizarre.

ERIC Educational Resources Information Center

Winarski, Diana L.

1994-01-01

Profiles Paul Zindel, the best-selling author of childrens' and adolescents' novels who combines hyperbole and pathos in such works as "The Pigman;""My Darling, My Hamburger;" and "The Pigman and Me." Zindel is also the author of the play "The Effect of Gamma Rays on Man-in-the-Moon Marigolds." (MDM)

Nature, Human Nature, and Solutions to Problems.

ERIC Educational Resources Information Center

Pedrini, D. T.; Pedrini, B. C.

This paper promotes an undergraduate course that would discuss the great ideas of Plato, St. Paul, Karl Marx, Sigmund Freud, Jean Paul Sartre, B. F. Skinner, and Konrad Lorenz. This course would help students understand human values and behaviors while focusing on historical, world, and national problems. Tentative solutions would then be…

A Report on Administrative Compensation Planning for St. Paul Public School Personnel.

ERIC Educational Resources Information Center

Hooker, Clifford P.; Mueller, Van D.

This report describes and analyzes various devices and techniques that may be utilized in planning local school administrative compensation. The document outlines broad overall goals for compensation planning, describes and evaluates the application of a compensation plan in the St. Paul schools, and proposes alternative strategies for…

Speaking Personally--With Paul Avon

ERIC Educational Resources Information Center

Martin, D'Arcy

2012-01-01

This article presents an interview with Paul Avon, the former executive director of the Canadian Virtual College Consortium. Avon has spent over fifteen years in the distance learning (DL) field managing the production and delivery of online learning at TVOntario, Humber College, the Sri Lankan National Online Distance Education Service, and the…

Guidelines for Software Engineering Education Version 1.0

DTIC Science & Technology

1999-11-01

Turbo Pascal and Software Design. Sudbury, Massachusetts: Jones and Bartlett, 1997. " Deitel, Harvey M. & Deitel, Paul J. C++: How to Program . Upper...Saddle River, New Jersey: Prentice-Hall, 1997. " Deitel, Harvey M. & Deitel, Paul J. Java: How to Program . Upper Saddle River, New Jersey: Prentice-Hall

Molecular Orbital (Hückel) Theory and Linus Pauling: A Historical Perspective

NASA Astrophysics Data System (ADS)

Sharma, Brahama D.

1996-08-01

This short article offers evidence contrary to the belief that Linus Pauling was somehow opposed to Hückel-type calculations and that he therefore provided little or no support to the school of scientists in the '60s who were engaged in these semiempirical calculations.

Linus Pauling Memorial Lectures

Science.gov Websites

Institute for Science, Engineering and Public Policy Home About The Institute Format/Policy Pauling Memorial Lectures Science, Engineering and Public Policy 2017-2018 Sabbatical Year Taking a Year Physics to the New Philosophy Terry Bristol Institute for Science, Engineering and Public Policy 7:00pm

Improving Success in Developmental Mathematics: An Interview with Paul Nolting

ERIC Educational Resources Information Center

Boylan, Hunter R.

2011-01-01

This article presents an interview with Dr. Paul Nolting, a national expert in assessing individual math learning problems, developing effective student learning strategies, and assessing institutional variables that affect math success. Since his dissertation in 1986 on improving math success with study skills Dr. Nolting has consulted with over…

Production of Ar{sup q+} ions with a tandem linear Paul trap

DOE Office of Scientific and Technical Information (OSTI.GOV)

Higaki, H., E-mail: hhigaki@hiroshima-u.ac.jp; Nagayasu, K.; Iwai, T.

A tandem linear Paul trap was used to create highly charged Argon ions by electron impact ionizations. By improving the operation scheme, the production of Ar{sup 4+} ions was confirmed. Possible improvements for the future experiments with laser cooled Ca{sup +} ions are suggested.

13. Photocopy of 1875 stereograph. Original in Paul A. Kohl's ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

13. Photocopy of 1875 stereograph. Original in Paul A. Kohl's office, Tower Grove, Missouri Botanical Garden. HENRY SHAW AND TWO GUESTS IN HIS LANDAU DRAWN BY A MATCHED PAIR IN FRONT OF THE EAST GATE - Tower Grove Park, East Gate Entrance, 4255 Arsenal Street, Saint Louis, Independent City, MO

SeaBASS 2012: A Marine BioAcoustics Summer School

DTIC Science & Technology

2012-09-30

accepted from six different countries (USA & Puerto Rico, Italy, United Kingdom, Greece, Canada, and Austria). Advertising for SeaBASS was published...there was so much good and varied information in all the lectures, I would have to give it to Paul for his storytelling . • Paul Nachtigall’s lecture

Paul Ricoeur, Memory, and the Historical Gaze: Implications for Education Histories

ERIC Educational Resources Information Center

Colby, Sherri Rae

2012-01-01

In this article, the author shares the potential applications of Paul Ricoeur's philosophies of history, memory, and narrative to the interpretation of educational histories, and those histories' life spans: moving cyclically from early conception, to evidentiary construction, to published dissemination; and ultimately to death or immortality. Her…

76 FR 38621 - New England Fishery Management Council; Public Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-01

... Street, Mill 2, Newburyport, MA 01950. FOR FURTHER INFORMATION CONTACT: Paul J. Howard, Executive... Monkfish Advisory Panel (AP) will meet to develop a detailed problem statement based on the list of issues... other auxiliary aids should be directed to Paul J. Howard, Executive Director, at (978) 465- 0492, at...

77 FR 28421 - Supplemental Draft Environmental Impact Statement for the Central Corridor Light Rail Transit...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-14

... DEPARTMENT OF TRANSPORTATION Federal Transit Administration Supplemental Draft Environmental Impact Statement for the Central Corridor Light Rail Transit Project, Minneapolis and Saint Paul, MN... Minneapolis and Saint Paul downtown areas as well as the University of Minnesota and the State Capitol complex...

78 FR 21141 - Changes in Flood Hazard Determinations

Federal Register 2010, 2011, 2012, 2013, 2014

2013-04-09

... Center at www.msc.fema.gov . FOR FURTHER INFORMATION CONTACT: Luis Rodriguez, Chief, Engineering...). County Judge, Paul North Pecos- La Elizondo Tower, 101 Trinidad Street, West Nueva Street, Suite 420, San..., Bexar Works Department, 233 06-2935P). County Judge, Paul North Pecos- La Elizondo Tower, 101 Trinidad...

The Canadian Forces Use of Private Security in Afghanistan: A Consequence of National Decisions

DTIC Science & Technology

2013-12-10

Swiss Peace (November 2007): 10-12. 5Paul Krugman, Robin Wells, and Martha Olney, Essentials of Economics (Macmillan, 2007), 56-84. 3...Paul, Robin Wells, and Martha Olney. Essentials of Economics . Macmillan, 2007. Kuhn, Thomas, S. The Structure of Scientific Revolutions. Chicago

Career Counseling of College Students: An Empirical Guide to Strategies That Work.

ERIC Educational Resources Information Center

Luzzo, Darrell Anthony, Ed.

This book contains 17 papers devoted to the counseling of college students. The following papers are included: "Introduction" (Darrell Anthony Luzzo); "Established Career Theories" (Paul J. Hartung, Spencer G. Niles); "Emerging Career Theories" (Spencer G. Niles, Paul J. Hartung); "Emotional-Social Issues in the…

Excerpts from Vatican's "Veritatis Splendor," Pope John Paul II's Views of Moral Truth.

ERIC Educational Resources Information Center

Chronicle of Higher Education, 1993

1993-01-01

Excerpts are presented from a recent papal encyclical that sets forth John Paul II's views on timeless moral truths and on dissent from them within the Roman Catholic Church. The responsibility of bishops to monitor Catholic institutions, including educational institutions, is noted. (MSE)

Beyond Bombs, Bullets and Planes: Developing Airmen-Statements for the 21st Century

DTIC Science & Technology

2009-12-11

credibility, trust and respect • Resolving conflict Source: Chaitra M. Hardison, Carra S. Sims, Farahana Ali, Andres Villamizar, Ben Mundell , and Paul......Categories Source: Chaitra M. Hardison, Carra S. Sims, Farahana Ali, Andres Villamizar, Ben Mundell , and Paul Howe, Cross-Cultural Skills for Deployed

Paul Winter, Sun Singer...He Talks about Outdoor Education.

ERIC Educational Resources Information Center

Breslav, Marc

1984-01-01

Interviews Paul Winter, well-known musical emissary for the Earth and its wildlife among the environmental community. Incorporating voices of wolves, whales, and other creatures as accompanists to an uncategorizable blend of symphonic, jazz, African and Latin musical traditions, Winter's sound involves listeners in a guided experience of…

A Schedule-Based Approach for Flow-Control in Data Communication Networks

DTIC Science & Technology

1986-01-01

Tally Altes, Erdal Arikan , Carey Bunks, Isidro Castineyra, Julio Escobar, Eli Gafni, Ellen Hahne, Dan Helman, Patrick Hosein, Joe Hui, Atul Khanna...Tiedemann, Kevin Tsai, Paul Tseng, Paul Wiley, and Albert Wong. I have especially enjoyed many discussions with Ellen Hahne, Erdal Arikan , Jean Regnier

The Role of the National Guard in Homeland Security

DTIC Science & Technology

2007-05-01

Fulcrum Publishing, 1996), 19. 22Ibid., 20. 23Thomas Andrew Bailey and Paul B. Ryan, The Lusitania Disaster: An Episode in Modern Warfare and...Bailey, Thomas Andrew, and Paul B. Ryan. The Lusitania Disaster: An Episode in Modern Warfare and Diplomacy. New York, NY: Free Press, 1975. Ball

Philosophy of Education Today

ERIC Educational Resources Information Center

Chambliss, J. J.

2009-01-01

In this review essay J.J. Chambliss assesses the current state of the field of philosophy of education through analysis of four recent edited compilations: Randall Curren's "A Companion to Philosophy of Education"; Nigel Blake, Paul Smeyers, Richard Smith, and Paul Standish's "The Blackwell Guide to Philosophy of Education"; Wilfred Carr's "The…

Revolution and Education in Late Nineteenth Century France: The Early Career of Paul Robin.

ERIC Educational Resources Information Center

Mclaren, Angus

1981-01-01

Discusses the importance of the work of radical educator Paul Robin and the socio-political environment in nineteenth century France which prompted it. Robin advocated free, secular, public education for the working classes which stressed spontaneity, practicality, individualized instruction, and sexual equality. (AM)

Combinatorial Relationships Learned by a Language-Trained Sea Lion

DTIC Science & Technology

1992-01-01

assistants. We thank Paul Losiewicz, Paul Nachtigall, and Herb Roitblat for reviewing a previous draft of this paper. LITERATURE CITED Chomsky, N., 1959, A...34Language and Communication: Comparative Perspectives," H. Roitblat , L. Herman, and P. Nachtigall, eds., L. Erlbaum, Hillsdale, NJ. Schusterman, R. J., and

Microstructure and thermomechanical properties relationship of segmented thermoplastic polyurethane (TPU)

NASA Astrophysics Data System (ADS)

Frick, Achim; Borm, Michael; Kaoud, Nouran; Kolodziej, Jan; Neudeck, Jens

2014-05-01

Thermoplastic polyurethanes (TPU) are important polymeric materials for seals. In competition with Acrylonitrile butadiene rubbers (NBR), TPU exhibits higher strength and a considerable better abrasion resistance. The advantage of NBR over TPU is a smaller compression set but however TPU excels in its much shorter processing cycle times. Generally a TPU is a block copolymer composed of hard and soft segments, which plays an important role in determining the material properties. TPU can be processed either to ready moulded parts or can be incorporated by multi component moulding, in both cases it shows decent mechanical properties. In the present work, the relationship between melt-process induced TPU morphology and resultant thermo mechanical properties were examined and determined by means of quasi-static tensile test, creep experiment, tension test and dynamical mechanical analysis (DMA). Scanning electron beam microscope (SEM) and differential scanning calorimeter (DSC) were used to study the morphology of the samples. A significant mathematical description of the stress-strain behaviour of TPU was found using a 3 term approach. Moreover it became evident that processing conditions such as processing temperature have crucial influence on morphology as well as short and long-term performance. To be more precise, samples processed at higher temperatures showed a lack of large hard segment agglomerates, a smaller strength for strains up to 250% and higher creep compliance.

Three dimensional (3D) microstructure-based finite element modeling of Al-SiC nanolaminates using focused ion beam (FIB) tomography

DOE Office of Scientific and Technical Information (OSTI.GOV)

Mayer, Carl R.

Al-SiC nanolaminate composites show promise as high performance coating materials due to their combination of strength and toughness. Although a significant amount of modeling effort has been focused on materials with an idealized flat nanostructure, experimentally these materials exhibit complex undulating layer geometries. This work utilizes FIB tomography to characterize this nanostructure in 3D and finite element modeling to determine the effect that this complex structure has on the mechanical behavior of these materials. A sufficiently large volume was characterized such that a 1 × 2 μm micropillar could be generated from the dataset and compared directly to experimental results.more » The mechanical response from this nanostructure was then compared to pillar models using simplified structures with perfectly flat layers, layers with sinusoidal waviness, and layers with arc segment waviness. The arc segment based layer geometry showed the best agreement with the experimentally determined structure, indicating it would be the most appropriate geometry for future modeling efforts. - Highlights: •FIB tomography was used to determine the structure of an Al-SiC nanolaminate in 3D. •FEM was used to compare the deformation of the nanostructure to experimental results. •Idealized structures from literature were compared to the FIB determined structure. •Arc segment based structures approximated the FIB determined structure most closely.« less

Computational studies on self-assembled paclitaxel structures: templates for hierarchical block copolymer assemblies and sustained drug release.

PubMed

Guo, Xin D; Tan, Jeremy P K; Kim, Sung H; Zhang, Li J; Zhang, Ying; Hedrick, James L; Yang, Yi Y; Qian, Yu

2009-11-01

Paclitaxel-loaded poly(ethylene oxide)-b-poly(lactide) (PEO-b-PLA) systems have been observed to assemble into fiber structures with remarkably different properties using different chirality and molecular weight of PLA segments. In this study, dissipative particle dynamics (DPD) simulations were carried out to elaborate the microstructures and properties of pure paclitaxel and paclitaxel-loaded PEO-b-PLA systems. Paclitaxel molecules formed ribbon or fiber like structures in water. With the addition of PEO-b-PDLA, PEO-b-PLLA and their stereocomplex, paclitaxel acted as a template and polymer molecules assembled around the paclitaxel structure to form core/shell structured fibers having a PEO shell. For PEO19-b-PDLA27 and PEO19-b-PLLA27 systems, PLA segments and paclitaxel molecules were distributed homogeneously in the core of fibers based on the hydrophobic interactions. In the stereocomplex formulation, paclitaxel molecules were more concentrated in the inner PLA stereocomplex core, which led to slower release of paclitaxel. By increasing the length of PLA segments (e.g. 8,16,22 and 27), the crystalline structure of paclitaxel was gradually weakened and destroyed, which was further proved by X-ray diffraction studies. All the simulation results agreed well with experimental data, suggesting that the DPD simulations may provide a powerful tool for designing drug delivery systems.

Machining Test Specimens from Harvested Zion RPV Segments for Through Wall Attenuation Studies

DOE Office of Scientific and Technical Information (OSTI.GOV)

Rosseel, Thomas M; Sokolov, Mikhail A; Nanstad, Randy K

2015-01-01

The decommissioning of the Zion Units 1 and 2 Nuclear Generating Station (NGS) in Zion, Illinois presents a special opportunity for developing a better understanding of materials degradation and other issues associated with extending the lifetime of existing Nuclear Power Plants (NPPs) beyond 60 years of service. In support of extended service and current operations of the US nuclear reactor fleet, the Oak Ridge National Laboratory (ORNL), through the Department of Energy (DOE), Light Water Reactor Sustainability (LWRS) Program, is coordinating and contracting with Zion Solutions, LLC, a subsidiary of Energy Solutions, the selective procurement of materials, structures, and componentsmore » from the decommissioned reactors. In this paper, we will discuss the acquisition of segments of the Zion Unit 2 Reactor Pressure Vessel (RPV), the cutting of these segments into sections and blocks from the beltline and upper vertical welds and plate material, the current status of machining those blocks into mechanical (Charpy, compact tension, and tensile) test specimens and coupons for chemical and microstructural (TEM, APT, SANS, and nano indention) characterization, as well as the current test plans and possible collaborative projects. Access to service-irradiated RPV welds and plate sections will allow through wall attenuation studies to be performed, which will be used to assess current radiation damage models (Rosseel et al. (2012) and Rosseel et al. (2015)).« less

Case Report on the Illness of Paul Klee (1879–1940)

PubMed Central

Suter, Hans

2014-01-01

This article reports on the disease that afflicted Paul Klee, the famous artist. He died before the disease that killed him could be properly diagnosed. There was some conjecture afterwards that he may have suffered from scleroderma. The thorough and diligent research the author of this article has carried out over many years allows him to argue that Paul Klee was suffering from this autoimmune disease since 1935. With a degree of probability that borders on certainty, it seems that the artist suffered from ‘diffuse systemic sclerosis’, and it is from this, the most severe form of the rare autoimmune disease, that he died in 1940. PMID:24876831

Use of a Linear Paul Trap to Study Random Noise-Induced Beam Degradation in High-Intensity Accelerators

DOE Office of Scientific and Technical Information (OSTI.GOV)

Chung, Moses; Gilson, Erik P.; Davidson, Ronald C.

2009-04-10

A random noise-induced beam degradation that can affect intense beam transport over long propagation distances has been experimentally studied by making use of the transverse beam dynamics equivalence between an alternating-gradient (AG) focusing system and a linear Paul trap system. For the present studies, machine imperfections in the quadrupole focusing lattice are considered, which are emulated by adding small random noise on the voltage waveform of the quadrupole electrodes in the Paul trap. It is observed that externally driven noise continuously produces a nonthermal tail of trapped ions, and increases the transverse emittance almost linearly with the duration of themore » noise.« less

Movement Analysis of Flexion and Extension of Honeybee Abdomen Based on an Adaptive Segmented Structure

PubMed Central

Zhao, Jieliang; Wu, Jianing; Yan, Shaoze

2015-01-01

Honeybees (Apis mellifera) curl their abdomens for daily rhythmic activities. Prior to determining this fact, people have concluded that honeybees could curl their abdomen casually. However, an intriguing but less studied feature is the possible unidirectional abdominal deformation in free-flying honeybees. A high-speed video camera was used to capture the curling and to analyze the changes in the arc length of the honeybee abdomen not only in free-flying mode but also in the fixed sample. Frozen sections and environment scanning electron microscope were used to investigate the microstructure and motion principle of honeybee abdomen and to explore the physical structure restricting its curling. An adaptive segmented structure, especially the folded intersegmental membrane (FIM), plays a dominant role in the flexion and extension of the abdomen. The structural features of FIM were utilized to mimic and exhibit movement restriction on honeybee abdomen. Combining experimental analysis and theoretical demonstration, a unidirectional bending mechanism of honeybee abdomen was revealed. Through this finding, a new perspective for aerospace vehicle design can be imitated. PMID:26223946

Fast dynamics in glass-forming polymers revisited

DOE Office of Scientific and Technical Information (OSTI.GOV)

Colmenero, J.; Arbe, A.; Mijangos, C.

1997-12-31

The so called fast-dynamics of glass-forming systems as observed by time of flight (TOF) neutron scattering techniques is revisited. TOF-results corresponding to several glass-forming polymers with different chemical microstructure and glass-transition temperature are presented together with the theoretical framework proposed by the authors to interpret these results. The main conclusion is that the TOF-data can be explained in terms of quasiharmonic vibrations and the particular short time behavior of the segmental dynamics. The segmental dynamics display in the very short time range (t {approx} 2 ps) a crossover from a simple exponential behavior towards a non-exponential regime. The first exponentialmore » decay, which is controlled by C-C rotational barriers, can be understood as a trace of the behavior of the system in absence of the effects (correlations, cooperativity, memory effects {hor_ellipsis}) which characterize the dense supercooled liquid like state against the normal liquid state. The non-exponential regime at t > 2 ps corresponds to what is usually understood as {alpha} and {beta} relaxations. Some implications of these results are also discussed.« less

Solvation structures of water in trihexyltetradecylphosphonium-orthoborate ionic liquids

DOE Office of Scientific and Technical Information (OSTI.GOV)

Wang, Yong-Lei, E-mail: wangyonl@gmail.com; System and Component Design, Department of Machine Design, KTH Royal Institute of Technology, SE-100 44 Stockholm; Sarman, Sten

2016-08-14

Atomistic molecular dynamics simulations have been performed to investigate effective interactions of isolated water molecules dispersed in trihexyltetradecylphosphonium-orthoborate ionic liquids (ILs). The intrinsic free energy changes in solvating one water molecule from gas phase into bulk IL matrices were estimated as a function of temperature, and thereafter, the calculations of potential of mean force between two dispersed water molecules within different IL matrices were performed using umbrella sampling simulations. The systematic analyses of local ionic microstructures, orientational preferences, probability and spatial distributions of dispersed water molecules around neighboring ionic species indicate their preferential coordinations to central polar segments in orthoboratemore » anions. The effective interactions between two dispersed water molecules are partially or totally screened as their separation distance increases due to interference of ionic species in between. These computational results connect microscopic anionic structures with macroscopically and experimentally observed difficulty in completely removing water from synthesized IL samples and suggest that the introduction of hydrophobic groups to central polar segments and the formation of conjugated ionic structures in orthoborate anions can effectively reduce residual water content in the corresponding IL samples.« less

Publishing and Intergenerational Learning for the Future of Philosophy in Education: An Interview with Paul Smeyers

ERIC Educational Resources Information Center

Forster, Daniella J.

2017-01-01

Amongst a remarkable publishing career, Paul Smeyers, editor of the journal "Ethics and Education," has written extensively on the situation afflicting philosophy of education. A recently published editor's invited symposium in "Studies in Philosophy and Education" (Smeyers, De Ruyter, Waghid, & Strand, 2014) put forward…

Hermann Paul and General Linguistic Theory

ERIC Educational Resources Information Center

Koerner, E. F. K.

2008-01-01

In most history of linguistics textbooks available until today Hermann Paul and his "Principles of Historical Linguistics," first published in 1880 and still available in reprints of the fifth edition of 1920, if given any attention at all, is cited for a statement he included in the second edition of 1886 in response to a review that…

34. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

34. Photographic copy of historic construction drawing, ink on linen, January 1890 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge: Plan of masonry. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

In Conversation with Paul Burstow

ERIC Educational Resources Information Center

Holman, Andrew

2013-01-01

Paul Burstow, a former minister for social care, was once charged with finding savings in care services. He completed his last two years, cut the Valuing People Now programme early, and returned to the back benches. He did, however, draft a Care and Support Bill and has subsequently used this experience to chair a joint Parliamentary Scrutiny…

A Method for Predicting Manning Factors in Post Year 2000 Ships

DTIC Science & Technology

1975-12-01

the automated condition. ij ;: Related to the problem of model validity is the consideration of the accuracy of the predictions. Linus Pauling ...described his use of the word "stochastic" in the April 1955 American Scientist. According to Pauling , the word is derived from a Greek stem which

Tempus Pro Patient Monitoring System

DTIC Science & Technology

2015-04-03

AFMSA SG5T, (AFMESA) Mr. John Ingram, AFMSA SG5T, AFMESA Mr. John Plaga , 711 HPW/HP Human Factors Engineering Mr. Paul Bailey, AMC SG/SGR Ms. Lynn...John Plaga , 711 HPW/HP Human Factors Engineering Mr. Paul Bailey, AMC SG/SGR Lt Col Cheryl Hale, AMC SG/SGK Mr. Graham Murphy, RDT Mr. Nigel

Near-surface geophysical characterization of Holocene faults conducive to geothermal flow near Pyramid Lake, Nevada

DOE Office of Scientific and Technical Information (OSTI.GOV)

Dudley, Colton; Dorsey, Alison; Louie, John

Colton Dudley, Alison Dorsey, Paul Opdyke, Dustin Naphan, Marlon Ramos, John Louie, Paul Schwering, and Satish Pullammanappallil, 2013, Near-surface geophysical characterization of Holocene faults conducive to geothermal flow near Pyramid Lake, Nevada: presented at Amer. Assoc. Petroleum Geologists, Pacific Section Annual Meeting, Monterey, Calif., April 19-25.

Justice John Paul Stevens and the Erotic Boomerang.

ERIC Educational Resources Information Center

Lieberman, Marc

Justice John Paul Stevens of the United States Supreme Court has ruled on obscenity cases in seven instances since his appointment. His rulings reveal that he regards obscenity as a nuisance rather than as a danger threatening to undermine the nation's morality, that he supports a nationwide standard to adjudicate obscenity cases, and that he…

1. GENERAL VIEW OF MAIN (SOUTH) FACADE OF CHURCH, LOOKING ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

1. GENERAL VIEW OF MAIN (SOUTH) FACADE OF CHURCH, LOOKING NORTH (For a brief history of Boswell and a description of Sts. Peter and Paul Russian Orthodox Greek Catholic Church see TOWN OF BOSWELL, HAER PA-367) - Saints Peter & Paul Russian Orthodox Greek Catholic Church, Quemahoning Street, Boswell, Somerset County, PA

Paul Piccone: Outside Academe

ERIC Educational Resources Information Center

Jacoby, Russell

2008-01-01

Today the academic world--open to Jews, women, and other previously excluded groups--has been completely revamped. Or has it? Despite the changes, is it possible the institution still promotes the mediocre and demotes the extraordinary? The life and work of Paul Piccone bear on this question--and others. Piccone, who died of cancer in 2004 at 64,…

"Paul Revere's Ride": Awakening Abolitionists

ERIC Educational Resources Information Center

Lepore, Jill

2011-01-01

Henry Wadsworth Longfellow used to be both the best-known poet in the English-speaking world and the most beloved, adored by the learned and the lowly alike, read by everyone from Nathaniel Hawthorne and Abraham Lincoln to John Ruskin and Queen Victoria--and, just as avidly, by the queen's servants. "Paul Revere's Ride" is Longfellow's best-known…

The Paul Petzoldt Trivia Quiz: His Philosophy and Teaching Methods.

ERIC Educational Resources Information Center

Wagstaff, Mark

Paul Petzoldt, co-founder of the Wilderness Education Association (WEA), helped mold the profession of outdoor leadership as we know it today. After his death in 1999, numerous field journals, old speeches, and personal correspondence were salvaged in order to refresh, clarify, and preserve Petzoldt's philosophy and teaching methods. The…

Finding a New Path to Learning

ERIC Educational Resources Information Center

Curriculum Review, 2006

2006-01-01

This article presents an interview with Paul Neff, a veteran teacher at Spokane, Washington's Lewis & Clark High. Paul Neff recently earned a $4,930 grant from the Toshiba America Foundation to purchase global-positioning systems and digital cameras for the Outdoor Living class he just took over two years ago. In an interview, Neff talks about…

The Paul A. Elsner Library and High Technology Complex--A Place for Learning.

ERIC Educational Resources Information Center

Moore, Chas. T., Jr.; Sugiyama, Kaoru K.

2001-01-01

Discusses the new Paul A. Elsner Library and High Technology Complex at Mesa Community College in Mesa, Arizona. Describes six planning goals for the facility, including access, integration of services, academic linkages, college services, district-wide services, and linkages with the community. Reports that the library offers faculty support…

American Indian Capacity Building in St. Paul, Minnesota.

ERIC Educational Resources Information Center

Eubanks, Don

A 1996 research project in St. Paul, Minnesota, found high rates of poverty and unemployment in its American Indian population and a lack of connection between social service agencies and the Indian community. A follow-up project aimed to support the Indian community in identifying its own priorities for research and action. Eight focus groups…

Colloquy to Paul Musset

ScienceCinema

None

2017-12-09

En honneur de Paul Musset il a été décidé de faire plutôt un colloque scientifique à la place d'une cérémonie. Plusieurs personnes temoignent de leurs estime et amitié pour ce physicien et ses activités

78 FR 11630 - New England Fishery Management Council; Public Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-19

..., Newburyport, MA 01950. FOR FURTHER INFORMATION CONTACT: Paul J. Howard, Executive Director, New England... multispecies fishery. A Notice of Intent to prepare an environmental impact statement (EIS) for this amendment... to Paul J. Howard (see ADDRESSES) at least 5 days prior to the meeting date. Authority: 16 U.S.C...

Paul Pinsky, PhD | Division of Cancer Prevention

Cancer.gov

Dr. Paul Pinsky is the chief of the Early Detection Research Branch. He has a background in statistics, epidemiology and mathematical modeling. He has worked extensively with data from the Branch's two large screening trials, the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial and the National Lung Screening Trial (NLST). |

75 FR 75542 - Qualification of Drivers; Exemption Renewals; Vision

Federal Register 2010, 2011, 2012, 2013, 2014

2010-12-03

... of the 21 renewal applications, FMCSA renews the Federal vision exemptions for Paul G. Albrecht..., Michael J. Paul, Russell A. Payne, Rodney M. Pegg, Raymond E. Peterson, Zbigniew P. Pietranik, John C. Rodriguez, Terrance L. Trautman, Charles E. Wood, and Joseph F. Wood. In accordance with 49 U.S.C. 31136(e...

Operation of SCINDA Receiver at the University of Calcutta and Space Weather Studies

DTIC Science & Technology

2015-02-18

Terr . Phys., 2014]. (ii) The pole ward gradient of the Equatorial Ionization Anomaly (EIA) introduces more intense propagation effects on...in the Indian longitude sector: Case studies, T. Das, K.S. Paul and A. Paul, J. Atmos. Sol. Terr . Phys., http://dx.doi.org/10.1016/j.jastp

Homelessness and Work Experience: Two Years in Saint Paul. Final Report.

ERIC Educational Resources Information Center

Davis, Dennis R.

A study explored the role of work experience in addressing problems of homeless people in Saint Paul (Minnesota) during the 1989-91 grant cycles of the McKinney Job Training for the Homeless Demonstration Program. The program included a number of elements: outreach, intake, assessment and enrollment, orientation, work experience, basic…

77 FR 75589 - Prevailing Rate Systems; Redefinition of the Minneapolis-St. Paul, MN, and Southwestern Wisconsin...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-12-21

... 3206-AM75 Prevailing Rate Systems; Redefinition of the Minneapolis-St. Paul, MN, and Southwestern Wisconsin Appropriated Fund Federal Wage System Wage Areas AGENCY: U.S. Office of Personnel Management..., and Southwestern Wisconsin appropriated fund Federal Wage System wage areas. The proposed rule would...

75 FR 38076 - Carbazole Violet Pigment 23 from India: Final Results of Antidumping Duty Administrative Review

Federal Register 2010, 2011, 2012, 2013, 2014

2010-07-01

... brief. We did not receive a request for a hearing. \\1\\ Nation Ford Chemical Company and Sun Chemical... Acting Deputy Assistant Secretary Paul Piquado dated concurrently with this notice, which is hereby..., 2010. Paul Piquado, Acting Deputy Assistant Secretary for Import Administration. Appendix 1...

75 FR 23804 - Notice of Inventory Completion: Paul H. Karshner Memorial Museum, Puyallup, WA

Federal Register 2010, 2011, 2012, 2013, 2014

2010-05-04

... made by the Paul H. Karshner Memorial Museum professional staff in consultation with representatives of... Memorial Museum, Puyallup, WA AGENCY: National Park Service, Interior. ACTION: Notice. Notice is here given... Memorial Museum, Puyallup, WA. The human remains were removed from the Aleutian Islands, AK. This notice is...

Paul Erdos

ERIC Educational Resources Information Center

Monroe, Helen; Scott, Paul

2004-01-01

This article presents a brief biography of Paul Erdos, who focused on problem-solving, particularly in the areas of number theory, combinatorics and graph theory. During his life he had no property, no family and no fixed address. He buttered his first piece of bread at age 21. He never cooked, nor ever drove a car. Another mathematician, Ron…

77 FR 42672 - Radio Broadcasting Services; Alberton, MT; Crystal Falls, MI; Saint Paul, AR; and Waitsburg, WA

Federal Register 2010, 2011, 2012, 2013, 2014

2012-07-20

... FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 [MB Docket No. 12-115; DA 12-1084] Radio Broadcasting Services; Alberton, MT; Crystal Falls, MI; Saint Paul, AR; and Waitsburg, WA AGENCY: Federal Communications Commission. ACTION: Final rule. SUMMARY: The Audio Division, on its own motion, deletes four...

Senate Confirmation Hearing IG

NASA Image and Video Library

2009-10-14

Paul K. Martin, nominee for Inspector General at NASA, right, answers questions during his confirmation hearing in front of the Senate Committee on Commerce, Science and Transportation, Thursday, Oct. 15, 2009, on Capitol Hill in Washington. At left is Dr. Elizabeth M. Robinson, nominee for Chief Financial Officer for NASA. Photo Credit: (NASA/Paul E. Alers)

Paul Mills Ireland III Portrait of a Soldier

ERIC Educational Resources Information Center

Dolan, John P.

2013-01-01

This dissertation explores the life and identity of Paul Mills Ireland, III. The qualitative study was conducted using the portraiture approach and was further developed by incorporating the holistic content approach of analysis in narrative research. This fifth generation soldier was the product of a strong military lineage, most of whom were…

75 FR 17901 - New England Fishery Management Council; Public Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-08

..., Newburyport, MA 01950. FOR FURTHER INFORMATION CONTACT: Paul J. Howard, Executive Director, New England... plan. There will be a presentation by scientists from the Universities of CT and RI titled ``Goals and... other auxiliary aids should be directed to Paul J. Howard (see ADDRESSES) at least 5 days prior to the...

Supplement Analysis for the Transmission System Vegetation Management Program FEIS (DOE/EIS-0285/SA-59) - Chehalis Covington/ Raver Paul / Paul Alston

DOE Office of Scientific and Technical Information (OSTI.GOV)

Tippetts, Greg

2002-04-19

Vegetation Management along the Chehalis Covington/ Raver Paul / Paul Alston 230 and 500 kV Transmission line Corridor ROW 48/2 to 70/6 and 1/1 to 13/4. The proposed work will be accomplished in the indicated sections of the transmission line corridor with a corridor width of 250 to 442 feet. BPA proposes to clear unwanted vegetation in the rights-of-ways and around tower structures that may impede the operation and maintenance of the subject transmission lines and access roads, including Reclaim and Danger Trees. BPA plans to conduct vegetation control with the goal of removing tall growing vegetation that is currentlymore » or will soon be a hazard to the transmission line. BPA’s overall goal is to have low-growing plant communities along the rights-of-way to control the development of potentially threatening vegetation. All work will be executed in accordance with the National Electrical Safety Code and BPA standards. Danger and “C” trees and chemical treatment contract work is scheduled to begin April 29, 2002.« less

Timing and causes of mid-Holocene mammoth extinction on St. Paul Island, Alaska

PubMed Central

Graham, Russell W.; Belmecheri, Soumaya; Choy, Kyungcheol; Culleton, Brendan J.; Davies, Lauren J.; Hritz, Carrie; Kapp, Joshua D.; Newsom, Lee A.; Rawcliffe, Ruth; Saulnier-Talbot, Émilie; Wang, Yue; Williams, John W.; Wooller, Matthew J.

2016-01-01

Relict woolly mammoth (Mammuthus primigenius) populations survived on several small Beringian islands for thousands of years after mainland populations went extinct. Here we present multiproxy paleoenvironmental records to investigate the timing, causes, and consequences of mammoth disappearance from St. Paul Island, Alaska. Five independent indicators of extinction show that mammoths survived on St. Paul until 5,600 ± 100 y ago. Vegetation composition remained stable during the extinction window, and there is no evidence of human presence on the island before 1787 CE, suggesting that these factors were not extinction drivers. Instead, the extinction coincided with declining freshwater resources and drier climates between 7,850 and 5,600 y ago, as inferred from sedimentary magnetic susceptibility, oxygen isotopes, and diatom and cladoceran assemblages in a sediment core from a freshwater lake on the island, and stable nitrogen isotopes from mammoth remains. Contrary to other extinction models for the St. Paul mammoth population, this evidence indicates that this mammoth population died out because of the synergistic effects of shrinking island area and freshwater scarcity caused by rising sea levels and regional climate change. Degradation of water quality by intensified mammoth activity around the lake likely exacerbated the situation. The St. Paul mammoth demise is now one of the best-dated prehistoric extinctions, highlighting freshwater limitation as an overlooked extinction driver and underscoring the vulnerability of small island populations to environmental change, even in the absence of human influence. PMID:27482085

Primary Hyperparathyroidism is Associated with Abnormal Cortical and Trabecular Microstructure and Reduced Bone Stiffness in Postmenopausal Women

PubMed Central

Stein, Emily M; Silva, Barbara C; Boutroy, Stephanie; Zhou, Bin; Wang, Ji; Udesky, Julia; Zhang, Chiyuan; McMahon, Donald J; Romano, Megan; Dworakowski, Elzbieta; Costa, Aline G.; Cusano, Natalie; Irani, Dinaz; Cremers, Serge; Shane, Elizabeth; Guo, X Edward; Bilezikian, John P

2013-01-01

Typically, in the milder form of primary hyperparathyroidism (PHPT), seen in most countries now, bone density by DXA and detailed analyses of iliac crest bone biopsies by histomorphometry and µCT show detrimental effects in cortical bone, whereas the trabecular site (lumbar spine by DXA) and the trabecular compartment (by bone biopsy) appear to be relatively well preserved. Despite these findings, fracture risk at both vertebral and non-vertebral sites is increased in PHPT. Emerging technologies, such as high-resolution peripheral quantitative computed tomography (HRpQCT), may provide additional insight into microstructural features at sites such as the forearm and tibia that have heretofore not been easily accessible. Using HRpQCT, we determined cortical and trabecular microstructure at the radius and tibia in 51 postmenopausal women with PHPT and 120 controls. Individual trabecula segmentation (ITS) and micro finite element (µFE) analyses of the HRpQCT images were also performed to further understand how the abnormalities seen by HRpQCT might translate into effects on bone strength. Women with PHPT showed, at both sites, decreased volumetric densities at trabecular and cortical compartments, thinner cortices, and more widely spaced and heterogeneously distributed trabeculae. At the radius, trabeculae were thinner and fewer in PHPT. The radius was affected to a greater extent in the trabecular compartment than the tibia. ITS analyses revealed, at both sites, that plate-like trabeculae were depleted, with a resultant reduction in the plate/rod ratio. Microarchitectural abnormalities were evident by decreased plate-rod and plate-plate junctions at the radius and tibia, and rod-rod junctions at the radius. These trabecular and cortical abnormalities resulted in decreased whole bone stiffness and trabecular stiffness. These results provide evidence that in PHPT, microstructural abnormalities are pervasive and not limited to the cortical compartment. They may help to account for increased global fracture risk in PHPT. PMID:23225022

Disrupted White Matter Microstructure and Mood Disorders after Traumatic Brain Injury.

PubMed

Spitz, Gershon; Alway, Yvette; Gould, Kate Rachel; Ponsford, Jennie L

2017-02-15

Traumatic brain injury (TBI) is associated with an elevated frequency of mood disorders that may, in part, be explained by changes in white-matter microstructure. This study is the first to examine the relationship between mood disorders and white-matter pathology in a sample of patients with mild to severe TBI using a standardized psychiatric interview. This study reports on a sub-sample of 29 individuals recruited from a large prospective study that examined the evolution of psychiatric disorders following complicated, mild to severe TBI. Individuals with TBI were also compared with 23 healthy control participants. Individuals were invited to complete the Structured Clinical Interview for DSM-IV Disorders (SCID) to diagnose psychiatric disorders. Participants who developed a mood disorder within the first 3 years were categorized into a TBI-Mood group. Diffusion tensor tractography assessed white matter microstructure using atlas-based tract-averaged and along-tract approaches. Fractional anisotropy (FA) was used as the measure of white-matter microstructure. TBI participants with and without a mood disorder did not differ in regard to injury severity and other background factors. Nevertheless, TBI participants diagnosed with a mood disorder displayed significantly lower tract-averaged FA values for the right arcuate fasciculus (p = 0.011), right inferior longitudinal fasciculus (p = 0.009), and anterior segments I (p = 0.0004) and II (p = 0.007) of the corpus callosum, as well as the left (p = 0.014) and right (p = 0.015) fronto-occipital longitudinal fasciculi. The pattern of white matter disruption identified in the current study provides further support for a neurobiological basis of post-TBI mood disorders. Greater understanding of individuals' underlying neuropathology may enable better characterization and prediction of mood disorders. Integration of neuropathology may also inform the potential efficacy of pharmacological and psychological interventions.

Crystal structure of a glycosylated Fab from an IgM cryoglobulin with properties of a natural proteolytic antibody

PubMed Central

Ramsland, Paul A.; Terzyan, Simon S.; Cloud, Gwendolyn; Bourne, Christina R.; Farrugia, William; Tribbick, Gordon; Geysen, H. Mario; Moomaw, Carolyn R.; Slaughter, Clive A.; Edmundson, Allen B.

2006-01-01

The 2.6 Å (1 Å=0.1 nm) resolution structure has been determined for the glycosylated Fab (fragment antigen binding) of an IgM (Yvo) obtained from a subject with Waldenström's macroglobulinaemia. Dynamic light scattering was used to estimate the gel point and monitor the formation of an ordered hydroscopic gel of Yvo IgM upon cooling. If a cryoglobulin forms gels in peripheral tissues and organs, the associated swelling and damage to microvasculature can result in considerable morbidity and mortality. The three-dimensional structure of the branched N-linked oligosaccharide associated with the CH1 domain (first constant domain of heavy chain) is reported. The carbohydrate may act to shield part of the lateral surface of the CH1 domain and crowd the junction between the CH1 and CH2 domains, thereby limiting the segmental flexibility of the Fab arms in intact Yvo IgM, especially at low temperatures. Recently, Yvo IgM was shown to have the properties of a naturally occurring proteolytic antibody [Paul, Karle, Planque, Taguchi, Salas, Nishiyama, Handy, Hunter, Edmundson and Hanson (2004) J. Biol. Chem. 279, 39611–39619; Planque, Bangale, Song, Karle, Taguchi, Poindexter, Bick, Edmundson, Nishiyama and Paul (2004) J. Biol Chem. 279, 14024–14032]. The Yvo protein displayed the ability to cleave, by a nucleophilic mechanism, the amide bonds of a variety of serine protease substrates and the gp120 coat protein of HIV. An atypical serine, arginine and glutamate motif is located in the middle of the Yvo antigen-binding site and displays an overall geometry that mimics the classical serine, histidine and aspartate catalytic triad of serine proteases. Our present findings indicate that pre-existing or natural antibodies can utilize at least one novel strategy for the cleavage of peptide bonds. PMID:16422668

Hygromorphic characterization of softwood under high resolution X-ray tomography for hygrothermal simulation

NASA Astrophysics Data System (ADS)

El Hachem, Chady; Abahri, Kamilia; Vicente, Jérôme; Bennacer, Rachid; Belarbi, Rafik

2018-03-01

Because of their complex hygromorphic shape, microstructural study of wooden materials behavior has recently been the point of interest of researchers. The purpose of this study, in a first part, consists in characterizing by high resolution X-ray tomography the microstructural properties of spruce wood. In a second part, the subresulting geometrical parameters will be incorporated when evaluating the wooden hygrothermal transfers behavior. To do so, volume reconstructions of 3 Dimensional images (3D), obtained with a voxel size of 0.5 μm were achieved. The post-treatment of the corresponding volumes has given access to averages and standard deviations of lumens' diameters and cell walls' thicknesses. These results were performed for both early wood and latewood. Further, a segmentation approach for individualizing wood lumens was developed, which presents an important challenge in understanding localized physical properties. In this context, 3D heat and mass transfers within the real reconstructed geometries took place in order to highlight the effect of wood directions on the equivalent conductivity and moisture diffusion coefficients. Results confirm that the softwood cellular structure has a critical impact on the reliability of the studied physical parameters.

Ion-irradiation-induced microstructural modifications in ferritic/martensitic steel T91

DOE Office of Scientific and Technical Information (OSTI.GOV)

Liu, Xiang; Miao, Yinbin; Li, Meimei

In this paper, in situ transmission electron microscopy investigations were carried out to study the microstructural evolution of ferritic/martensitic steel T91 under 1 MeV Krypton ion irradiation up to 4.2 x 10(15) ions/cm(2) at 573 K, 673 K, and 773 K. At 573 K, grown-in defects are strongly modified by black dot loops, and dislocation networks together with black-dot loops were observed after irradiation. At 673 K and 773 K, grown-in defects are only partially modified by dislocation loops; isolated loops and dislocation segments were commonly found after irradiation. Post irradiation examination indicates that at 4.2 x 1015 ions/cm(2), aboutmore » 51% of the loops were a(0)/2 < 111 > type for the 673 K irradiation, and the dominant loop type was a(0)< 100 > for the 773 K irradiation. Finally, a dispersed barrier hardening model was employed to estimate the change in yield strength, and the calculated ion data were found to follow the similar trend as the existing neutron data with an offset of 100-150 MPa. (C) 2017 Elsevier B.V. All rights reserved.« less

KSC-07pd2035

NASA Image and Video Library

2007-07-19

KENNEDY SPACE CENTER, FLA. -- The STS-118 crew breaks for a photo with the Endeavour team and key personnel during payload familiarization. Kneeling in front are Eve Stavros, Boeing flow manager for the mission; Dave Brashinger, with NASA; Paul Boehm, EVA trainer; S. Adam Niev, with NASA Electrical; Louise Kleba, with the KSC payload VITT office; Lance Rogers, a NASA summer co-op; and Jackie Kagey, an EVA trainer. Standing in the back, from left, are photographer Cory Huston; Darren Welsh, EVA trainer; Jack Keifenheim, with NASA Engineering; Mission Specialist Barbara R. Morgan, Pilot Charlie Hobaugh, Mission Specialist Alvin Drew, Commander Scott Kelly, and Mission Specialists Dave Williams and Tracy Caldwell, Lisa Alonso, a NASA summer intern; and (far right) Mission Specialist Rick Mastracchio. Morgan joined NASA's Teacher in Space program in 1985 and was selected as an astronaut in 1998. Williams represents the Canadian Space Agency. The 22nd shuttle flight to the International Space Station, the STS-118 mission will continue space station construction by delivering a third starboard truss segment, S5, and other payloads such as the SPACEHAB module and the external stowage platform 3. Photo credit: NASA/George Shelton

3D shape extraction segmentation and representation of soil microstructures using generalized cylinders

NASA Astrophysics Data System (ADS)

Ngom, Ndèye Fatou; Monga, Olivier; Ould Mohamed, Mohamed Mahmoud; Garnier, Patricia

2012-02-01

This paper focuses on the modeling of soil microstructures using generalized cylinders, with a specific application to pore space. The geometric modeling of these microstructures is a recent area of study, made possible by the improved performance of computed tomography techniques. X-scanners provide very-high-resolution 3D volume images ( 3-5μm) of soil samples in which pore spaces can be extracted by thresholding. However, in most cases, the pore space defines a complex volume shape that cannot be approximated using simple analytical functions. We propose representing this shape using a compact, stable, and robust piecewise approximation by means of generalized cylinders. This intrinsic shape representation conserves its topological and geometric properties. Our algorithm includes three main processing stages. The first stage consists in describing the volume shape using a minimum number of balls included within the shape, such that their union recovers the shape skeleton. The second stage involves the optimum extraction of simply connected chains of balls. The final stage copes with the approximation of each simply optimal chain using generalized cylinders: circular generalized cylinders, tori, cylinders, and truncated cones. This technique was applied to several data sets formed by real volume computed tomography soil samples. It was possible to demonstrate that our geometric representation supplied a good approximation of the pore space. We also stress the compactness and robustness of this method with respect to any changes affecting the initial data, as well as its coherence with the intuitive notion of pores. During future studies, this geometric pore space representation will be used to simulate biological dynamics.

75. Photocopy of photograph (original print in the Minnesota Historical ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

75. Photocopy of photograph (original print in the Minnesota Historical Society, St. Paul, Minnesota, ca. 1870s. #22006. Photographer: Illingworth.) VIEW TO SOUTHEAST, SHOWING THE UPPER LEVEE AND BLUSS (on left) TO WHICH THE HIGH BRIDGE WAS BUILT - Smith Avenue High Bridge, Smith Avenue between Cherokee Avenue & Cliff Street, Saint Paul, Ramsey County, MN

2010-2012 Minneapolis - St. Paul Travel Behavior Inventory |

Science.gov Websites

-St. Paul area conducted the survey. Methodology The TBI consists of a paper-based survey and a wearable global positioning system (GPS) survey. The data-collection process for these two surveys was independent, and the results are not intended to function together. Survey Records Survey records include

E. Paul Torrance: His Life, Accomplishments, and Legacy. Research Monograph Series.

ERIC Educational Resources Information Center

Hebert, Thomas P.; Cramond, Bonnie; Neumeister, Kristie L. Speirs; Millar, Garnet; Silvian, Alice F.

This monograph is designed to be a tribute to E. Paul Torrance, a renowned creativity researcher, university teacher, and mentor. It is presented in three sections, the first of which is a discussion of Torrance's life. It reviews his childhood in rural Georgia, his academic accomplishments, the emergence of his interest in creativity and the…

37. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

37. Photographic copy of historic construction drawing, ink on linen, no date (est. January 1890) (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge: Plan of masonry approach. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

26. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

26. Photographic copy of historic construction drawing, ink on linen, January 1890 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge: General plan of truss spans. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

31. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

31. Photographic copy of historic construction drawing, ink on linen, January 1890 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge (truss spans): Plan of portal struts. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

36. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

36. Photographic copy of historic construction drawing, ink on linen, January 1890 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge: General plan of west approach. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

35. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

35. Photographic copy of historic construction drawing, ink on linen, January 1890 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge: General plan of east approach. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

32. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

32. Photographic copy of historic construction drawing, ink on linen, December 1889 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge (truss span): Detail of longitudinal & top struts. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

25. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

25. Photographic copy of historic construction drawing, ink on linen, November 1889/January 1890 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Plan and profile of Selby Avenue Bridge. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

30. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

30. Photographic copy of historic construction drawing, ink on linen, December 1889 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge (truss spans): section of roadway with details. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

29. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

29. Photographic copy of historic construction drawing, ink on linen, January 1890 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge: Detail of small truss. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

33. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

33. Photographic copy of historic construction drawing, ink on linen, January 1890 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge: Plan of shoes, bolsters, & rollers. - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

Development and Motivation in/for Critical Thinking

ERIC Educational Resources Information Center

Riggs, Larry W.; Hellyer-Riggs, Sandra

2014-01-01

An explicit link between the issues of development and critical thinking is provided by Elder and Paul (1996). In their stage theory of critical thinking, Elder and Paul argued that the first stage beyond unreflective thinking is that of the challenged thinker. The challenged thinker is one who has become aware of the actual role of thinking in…

The Economic Impact of Ten Cultural Institutions on the Economy of the Minneapolis-St. Paul SMSA.

ERIC Educational Resources Information Center

Cwi, David

The impact on the economy of 10 cultural institutions in the Minneapolis-St. Paul area was determined by measuring their 1978 direct and indirect fianancial effects. The institutions are the Children's Theatre Company, Chimera Theatre, Cricket Theatre, Guthrie Theatre, Minneapolis Institute of Arts, Minnesota Dance Theatre, Minnesota Orchestra,…

SPEAKING, WRITING, AND LISTENING IN THE ST. PAUL ELEMENTARY SCHOOLS.

ERIC Educational Resources Information Center

AMBROSE, HELEN; AND OTHERS

DESIGNED AS A RESOURCE FOR ELEMENTARY SCHOOL TEACHERS TO USE IN HELPING CHILDREN THINK CLEARLY AND COMMUNICATE EFFECTIVELY, THE ST. PAUL CURRICULUM GUIDE IS DIVIDED INTO THREE SECTIONS--SPEAKING, LISTENING, AND WRITING. AN OVERVIEW OF EACH SECTION DESCRIBES CURRENT THINKING IN THE FIELD AND GENERAL SKILLS WHICH NEED TO BE ACQUIRED BY STUDENTS.…

The Initial Shock: A Conversation with Paul Fussell.

ERIC Educational Resources Information Center

Hackney, Sheldon

1996-01-01

Presents an interview with Paul Fussell, author of "The Great War and Modern Memory." Fussell speaks about the destruction of that war and his own experiences as a combat officer in World War II. He also addresses his original field of study, 18th century literature, and some of the changes wrought by the 20th century. (MJP)

Musings on Paul Peterson's "School Politics Chicago Style" and on the Utility of Decision-Making Models.

ERIC Educational Resources Information Center

Murphy, Jerome T.

In "School Politics Chicago Style," Paul E. Peterson is quick to credit Graham Allison's work. There are major differences between them, however. The authors reach different conclusions about the role of rationality and bargaining because they use different definitions, because of the influence of the dominant mode of thinking at the…

An Analysis of "City of Glass" by Paul Auster in Terms of Postmodernism

ERIC Educational Resources Information Center

Odacioglu, Mehmet Cem; Loi, Chek Kim; Çoban, Faddime

2017-01-01

This study analyzes "City of Glass," a postmodernist detective novella (or anti-detective) of the "New York Trilogy" by Paul Auster in terms of postmodernist elements and techniques such as metafiction, parody, intertextuality, irony and like. In doing so, some information about Auster's life and the plot of the work are also…

Touched by Injury: Toward an Educational Theory of Anti-Racist Humanism

ERIC Educational Resources Information Center

Georgis, Dina; Kennedy, R. M.

2009-01-01

Informed by the critical humanisms of Hannah Arendt, Frantz Fanon, and Paul Gilroy, the authors argue for an orientation to teaching and learning that troubles the continuing effects of dehumanizing race logic. Reflecting on Paul Haggis's Oscar award winning film "Crash" from 2004, they suggest that the metaphor of racial "crashing" captures what…

Inquiry and Irony: Promise and Paradox in Paul Jablon's "The Synergy of Inquiry"

ERIC Educational Resources Information Center

Nurenberg, David

2016-01-01

Paul Jablon's "The Synergy of Inquiry" (2014) is well-timed. The 2014 deadline set by No Child Left Behind (NCLB, 2002) for universal student proficiency has come and gone, and according to the National Assessment of Educational Progress, "proficiency rates last year were below 50 percent for nearly every racial and ethnic group, in…

Paul F-Brandwein Lecture 2006: Conservation Education for the 21st Century and beyond

ERIC Educational Resources Information Center

Roth, Charles E.

2008-01-01

This paper explores Paul Brandwein's contribution to the concept of conservation education in America. It examines the evolution of the concept to today's environmental education. It then identifies some of the weaknesses of current environmental education and presents ideas on how to move past them to a point where conservation education is…

Using TAPS Focused Assessments as Part of Our Teacher Assessment Approach

ERIC Educational Resources Information Center

Barber, Kerry-Anne

2018-01-01

As the Science Co-ordinator at St Paul's RC Primary School, the author has been involved in producing and trialling resources for the Teacher Assessment in Primary Science (TAPS) project over the last four years. This article explains how St Paul's has used the Focused Assessments (FAs). The author has always tried to promote enquiry-based…

Publisher Correction: Universal strategy for Ohmic hole injection into organic semiconductors with high ionization energies

NASA Astrophysics Data System (ADS)

Kotadiya, Naresh B.; Lu, Hao; Mondal, Anirban; Ie, Yutaka; Andrienko, Denis; Blom, Paul W. M.; Wetzelaer, Gert-Jan A. H.

2018-06-01

In the html version of this Article originally published, Paul W. M. Blom and Gert-Jan A. H. Wetzelaer were incorrectly listed as Paul M. W. Blom and Gert-Jan H. A. Wetzelaer, respectively, due to a technical error. This has now been amended in all online versions of the Article.

Big City Superintendent as Powerful CEO: Paul Vallas in Philadelphia

ERIC Educational Resources Information Center

Useem, Elizabeth

2009-01-01

This case study of the leadership of Paul Vallas as CEO of the Philadelphia city schools from 2002-2007 demonstrates that No Child Left Behind has enhanced the formal authority of big city district chiefs even though they are constrained by its accountability mandates and by the pressures from a growing number of influential stakeholder groups. In…

Paul of Aegina (ca 625-690 ad), Reconstructing Male Gynecomastia.

PubMed

Tsoucalas, Gregory; Sgantzos, Markos

2017-06-01

Paul of Aegina thrived with his innovative operations, practically creating a kind of a new surgical school. He had deeply believed in human's body perfection introducing a series of cosmetic operations. Among them stood the male's breasts reconstruction in the case of pseudo-gynecomastia. His intervention was replicated by both the western Europeans and the Arabs.

Review Symposium; Dancing on the Ceiling: A Study of Women Managers in Education, by Valerie Hall. London: Paul Chapman, 1996.

ERIC Educational Resources Information Center

Hall, Valerie; Gronn, Peter; Jenkin, Mazda; Power, Sally; Reynolds, Cecilia

1999-01-01

Hall and four colleagues review "Dancing on the Ceiling: A Study of Women Managers in Education" (Paul Chapman, 1996). Reviewers agree that Hall's profiles of six British elementary and secondary women headteachers should improve readers' understanding of female managers' development and their preference for "soft,"…

STS-125 Flight Control Team in WFCR - Orbit 3 - Flight Director Paul Dye

NASA Image and Video Library

2009-05-20

JSC2009-E-120846 (20 May 2009) --- The members of the STS-125 Orbit 3 flight control team pose for a group portrait in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center. Flight director Paul Dye (center left) is visible on the front row.

Paul Pintrich: A Once and Continuing Influence

ERIC Educational Resources Information Center

Maehr, Martin L.

2005-01-01

This article provides an integrative perspective on the articles presented in this special issue. It is also a very personal perspective. In such small space it is impossible to do justice fully to Paul's work or to the reflections on that work. What this final article attempts is a statement that emphasizes the scope and depth of this work as…

Making the Marine Corps Reserve Truly Operational: A Case Study in the Reorganization of the Marine Corps Reserve

DTIC Science & Technology

2012-05-10

Military’s Reliance on the Reserves”, PRB March 2005, http://www.prb.org/Articles/2005/USMilitarysRelianceontheReserves 30 Purpura , Paul. “Transfer of...March 20, 2009. Purpura , Paul. “Transfer of Marine Corps facility in New Orleans nears completion”, The Times Picayune. May 30, 2011. http

75 FR 59327 - Qualification of Drivers; Exemption Applications; Vision

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-27

... exemption for a renewable two-year period. They are: Paul G. Albrecht Elijah A. Allen, Jr. David W. Brown.... Kildow Daniel A. McNabb David G. Meyers Thomas L. Oglesby Michael J. Paul Russell A. Payne Rodney M. Pegg Raymond E. Peterson Zbigniew P. Pietranik John C. Rodriguez Terrance L. Trautman Charles E. Wood Joseph F...

Paul Laurence Dunbar: Dialect et la Negritude

ERIC Educational Resources Information Center

Hudson, Gossie Harold

1973-01-01

The black poet Paul Laurence Dunbar, born June 27, 1872 and died February 9, 1906, was an unrivalled forerunner of the great literary generation of his race that burst forth after the first World War and founded the Black Renaissance; the concept of La Negritude'' developed principally among poets of African descent before World War 2. (Author/JM)

78 FR 16493 - ExxonMobil Canada Energy, Flint Hills Resources Canada, LP, Imperial Oil, NOVA Chemical (Canada...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-15

.... Paul Park Refining Co. LLC, Suncor Energy Marketing, Inc., United Refining Company v. Enbridge Energy..., Inc., Phillips 66 Canada ULC, St. Paul Park Refining Co. LLC, Suncor Energy Marketing, Inc., and... assistance with any FERC Online service, please email [email protected] , or call (866) 208-3676...

Systems Performance Analyses of Alaska Wind-Diesel Projects; St. Paul, Alaska (Fact Sheet)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Baring-Gould, I.

2009-04-01

This fact sheet summarizes a systems performance analysis of the wind-diesel project in St. Paul, Alaska. Data provided for this project include load data, average wind turbine output, average diesel plant output, dump (controlling) load, average net capacity factor, average net wind penetration, estimated fuel savings, and wind system availability.

Looking east at canal and R. Paul Smith Power Station. ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Looking east at canal and R. Paul Smith Power Station. The dark trestle at right center carried the spur track to coal unloading facilities located in the space now occupied by the coal pile. - Potomac Edison Company, Chesapeake & Ohio Canal Bridge, Spanning C & O Canal South of U.S. 11, Williamsport, Washington County, MD

Missed opportunities in crystallography.

PubMed

Dauter, Zbigniew; Jaskolski, Mariusz

2014-09-01

Scrutinized from the perspective of time, the giants in the history of crystallography more than once missed a nearly obvious chance to make another great discovery, or went in the wrong direction. This review analyzes such missed opportunities focusing on macromolecular crystallographers (using Perutz, Pauling, Franklin as examples), although cases of particular historical (Kepler), methodological (Laue, Patterson) or structural (Pauling, Ramachandran) relevance are also described. Linus Pauling, in particular, is presented several times in different circumstances, as a man of vision, oversight, or even blindness. His example underscores the simple truth that also in science incessant creativity is inevitably connected with some probability of fault. Published 2014. This article is a U.S. Government work and is in the public domain in the USA.

Diverse Data Sets for Impact

DTIC Science & Technology

2018-02-01

Defense Actions Against Test-Set Attacks”, In Proceedings of the Conference on Artificial Intelligence (AAAI), San Francisco, CA, February, 2017...Scott Alfeld, Jerry Zhu and Paul Barford. “Data Poisoning Attacks against Autoregressive Models”, In Proceedings of the Conference on Artificial ... Intelligence (AAAI), Phoenix, AZ, February, 2016. 7) Aaron Cahn, Scot Alfeld, Paul Barford and S. Muthukrishnan. “An Empirical Study of Web Cookies

Deadline Tightness and Performance in Operational and Logistics Contexts

DTIC Science & Technology

2016-06-01

LOGISTICS CONTEXTS June 2016 By: Jason E. Blanchard Paul J. Kloepping Derek E. Vogt Advisors: Ken Doerr David Nembhard Jelle de...OPERATIONAL AND LOGISTICS CONTEXTS 5. FUNDING NUMBERS 6. AUTHOR(S) Jason E. Blanchard, Paul J. Kloepping, and Derek E. Vogt 7. PERFORMING ORGANIZATION...for public release; distribution is unlimited DEADLINE TIGHTNESS AND PERFORMANCE IN OPERATIONAL AND LOGISTICS CONTEXTS Jason Blanchard

27. Photographic copy of historic construction drawing, ink on linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

27. Photographic copy of historic construction drawing, ink on linen, January 1890 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge: Detail of truss (end with inclined end post). - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

28. Photographic copy of historic construction drawing, ink or linen, ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

28. Photographic copy of historic construction drawing, ink or linen, December 1889 (original filed in drawer 98, Bridge Division, Department of Public Works, St. Paul City Annex). Selby Avenue Bridge: Detail of truss (end which abuts small truss). - Selby Avenue Bridge, Spanning Short Line Railways track at Selby Avenue between Hamline & Snelling Avenues, Saint Paul, Ramsey County, MN

Using an Experimental Approach to Improving the Selective Reenlistment Bonus Program

DTIC Science & Technology

2007-06-01

when establishing a reenlistment bonus. 12 Paul G. Keat and Philip K. Y. Young . Managerial Economics ...Journal of Labor Economics Vol. 6, No. 4, October 1988, 423-444. Keat , Paul G. and Philip K. Y. Young . Managerial Economics : Economic Tools for...alternative compensation methods, specifically auctions, signaling theory, and experimental economics ; and explains how an economic experiment might be

The New City School. Profiles of Promise 5.

ERIC Educational Resources Information Center

Sandell, Stephen; Haley, Frances

Students and faculty of the New City School are housed in a single open room of a reconditioned building in an industrial area of St. Paul. Students come from St. Paul's neighborhood high schools, night school, and Open School. They may attend a nine-week session in the morning or afternoon for 2 1/2 hours. The eleven permanent staff members are…

Will U.S. Forces Be Hollow Once Again?

DTIC Science & Technology

2012-12-06

the “hollow force” emerged. 138M. Albert Mendez and Lee Russell, Illustrated by Paul Hannon, Granada 1983 (Great Britain: Osprey Publishing Ltd, 1985...called 139Mendez, Russell, and Hannon, Granada 1983, 33-34. 140The author understands this is...Lee Russell, Illustrated by Paul Hannon. Granada 1983. Great Britain: Osprey Publishing Ltd, 1985. O’Hanlon, Michael E. The Science of War

Hate Speech in Colleges and Universities--The Aftermath of "R.A.V. v. City of St. Paul, Minnesota".

ERIC Educational Resources Information Center

Brown, Valerie L.

1993-01-01

The Supreme Court ruled, in "R.A.V. v. City of St. Paul Minnesota," that the city's Biased-Motivated Crime Ordinance is unconstitutional. Discusses the factual background of "R.A.V.," of "Doe v. University of Michigan," and leading cases in the area of student first amendment rights. Draws conclusions and assesses…

33 CFR 207.320 - Mississippi River, Twin City Locks and Dam, St. Paul and Minneapolis, Minn.; pool level.

Code of Federal Regulations, 2012 CFR

2012-07-01

... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Mississippi River, Twin City... § 207.320 Mississippi River, Twin City Locks and Dam, St. Paul and Minneapolis, Minn.; pool level. In... the Twin City Locks and Dam, Minneapolis, in the interest of navigation, and supersedes rules and...

33 CFR 207.320 - Mississippi River, Twin City Locks and Dam, St. Paul and Minneapolis, Minn.; pool level.

Code of Federal Regulations, 2013 CFR

2013-07-01

... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Mississippi River, Twin City... § 207.320 Mississippi River, Twin City Locks and Dam, St. Paul and Minneapolis, Minn.; pool level. In... the Twin City Locks and Dam, Minneapolis, in the interest of navigation, and supersedes rules and...

33 CFR 207.320 - Mississippi River, Twin City Locks and Dam, St. Paul and Minneapolis, Minn.; pool level.

Code of Federal Regulations, 2014 CFR

2014-07-01

... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Mississippi River, Twin City... § 207.320 Mississippi River, Twin City Locks and Dam, St. Paul and Minneapolis, Minn.; pool level. In... the Twin City Locks and Dam, Minneapolis, in the interest of navigation, and supersedes rules and...

At Paul Quinn, Students Till the Soil to Cultivate a Better College

ERIC Educational Resources Information Center

Kelderman, Eric

2012-01-01

In autumn, most colleges' football fields are covered with a thick carpet of grass or artificial turf and are adorned with yard lines. But the football field at Paul Quinn College was carved up by plowing and planting. This past fall, portions of the college's gridiron were covered with sweet potatoes, watermelons, peppers, rosemary, and sugar…

Comments on "place and human development" by Paul Shepard and Yi-Fu Tuan's "experience and appreciation"

Treesearch

Florence C. Ladd

1977-01-01

Paul Shepard presents a dazzling array of profound ideas about the nature of the relationship between early developmental stages and places experienced in a variety of cultures. Shepard's analysis is related to the schema presented in Spivack's (1973) paper, in which he identifies some basic requirements of the human species and the environmental conditions...

Multi-Modal Interaction for Robotic Mules

DTIC Science & Technology

2014-02-26

Multi-Modal Interaction for Robotic Mules Glenn Taylor, Mike Quist, Matt Lanting, Cory Dunham , Patrick Theisen, Paul Muench Abstract...Taylor, Mike Quist, Matt Lanting, Cory Dunham , and Patrick Theisen are with Soar Technology, Inc. (corresponding author: 734-887- 7620; email: glenn...soartech.com; quist@soartech.com; matt.lanting@soartech.com; dunham @soartech.com; patrick.theisen@soartech.com Paul Muench is with US Army TARDEC

Paul F-Brandwein 2004 Lecture: Regarding the Ecology of Science Education: Connections to Environmental and Distance Education

ERIC Educational Resources Information Center

Bennett, Sheila K.; Bennett, Dean B.

2004-01-01

Paul F-Brandwein was a visionary who looked at education broadly. He left us with an insightful view of the ecology of education in which he identified three ecological systems: school-family-community, postsecondary, and cultural. The first part of this lecture, by Dean B. Bennett, examines Brandwein's ideas related to environmental education and…

ACHP | Working Together to Build a More Inclusive Preservation Program

Science.gov Websites

LaRue, history educator, Washington Court House, Ohio Paul LaRue Paul LaRue retired in 2014 after 30 about their own history and that of their community and getting actively involved in historic history; which gave my students the opportunity to step out of the classroom and into the community to

76 FR 65496 - Reorganization of Foreign-Trade Zone 119 Under Alternative Site Framework, Minneapolis/St. Paul, MN

Federal Register 2010, 2011, 2012, 2013, 2014

2011-10-21

... DEPARTMENT OF COMMERCE Foreign-Trade Zones Board [Order No. 1790] Reorganization of Foreign-Trade Zone 119 Under Alternative Site Framework, Minneapolis/St. Paul, MN Pursuant to its authority under the Foreign-Trade Zones Act of June 18, 1934, as amended (19 U.S.C. 81a-81u), the Foreign-Trade Zones Board...

Time to Dream: "Reflections on Paul Diederich and the Progressive American High School"

ERIC Educational Resources Information Center

O'Connor, John S.; Lessing, Avi D.

2015-01-01

In this essay, John S. O'Connor and Avi D. Lessing discuss the increasingly reductive and routinized nature of contemporary schools and the costs such an approach holds for students and teachers alike. The current approach is especially troublesome in light of the rich history of progressive voices, such as Paul Diederich, who have cautioned…

Anarchist Epistemologies and the Separation of Science and State: The Critique and Relevance of Paul Feyerabend to Educational Foundations

ERIC Educational Resources Information Center

Wolfmeyer, Mark

2017-01-01

This article synthesizes Paul Feyerabend's controversial contributions to 20th-century philosophy of science through the synthesis of his works and the secondary literature, with specific foci on current trends in educational foundations and the potentials and pitfalls for applying Feyerabendian logics to our work. First, I situate his strains of…

Troubled Theory in the Debate between Hirst and Carr

ERIC Educational Resources Information Center

Long, Fiachra

2008-01-01

When Paul Hirst and Wilfred Carr squared up to each other a few years ago on the issue of the role of philosophical theory in educational practice, it became clear that theory itself had become a troubled term. The very fact that Wilfred Carr could argue for the end of educational theory recalls Paul Feyerabend's fiery argument for the end of…

Strategy Of Attrition: Why General Westmoreland Failed In 1967

DTIC Science & Technology

2016-05-26

393-408; Neil Sheehan, A Bright Shining Lie: John Paul Vann and America in Vietnam (New York: Random House, 1988), 6. 1...March, James G, and Chip Heath . A Primer on Decision Making: How...Washington, DC: Office of Air Force History, 1988. Sheehan, Neil . A Bright Shining Lie: John Paul Vann and America in Vietnam. New York: Random House

Transgressing the Witness at Three Sites of Knowledge

ERIC Educational Resources Information Center

Watt, Daniel

2007-01-01

This article examines a performance event, "Life is Perfect," by Paul+a (Paul Jeff and Sarah Dowling), which took place on 2 October 2004 over a period of 24 hours at The Peterstone Court Hotel in mid-Wales. The site of this work was then revisited by TRAWS (The Inter-University research group for Performance in Wales) as part of an…

Voice and Vision in Paul Zimmer's "The Great Bird of Love."

ERIC Educational Resources Information Center

Worsham, Fabian Clements

Paul Zimmer's latest poetry collection, "The Great Bird of Love," is serious and somber, fraught with the burden of evil, the indifference of God, and the certainty of death. The book is not humorless, however, as humor is central to both the chaotic evil and the ordered goodness of human life. It is in this collection that it is…

Paul Abraham: A Forgotten Scholar of the Prussian Academy of Sciences and Humanities

ERIC Educational Resources Information Center

Thiel, Jens

2004-01-01

Paul Abraham, one of the Berlin Academy's most experienced researchers, was deported to Auschwitz in 1943. The fate of this Jewish scholar reveals much about the inner life of the Academy, and its treatment of Jewish staff, during the World War II. This paper describes his life, against a backdrop of war, revolution, and dictatorship, and in the…

Why English Teachers MATTER: Some Reflections on the Life of Dr. Paul Brock

ERIC Educational Resources Information Center

Manuel, Jacqueline; Brock, Sophia; Brock, Amelia

2017-01-01

This special issue of "English in Australia" invited the wife (Jacqueline Manuel) and daughters (Sophia and Amelia Brock) of Paul Brock, who served fifty years as an educator, to provide this reflective piece on his influence as a leader in education, a writer, a teacher, a scholar, a mentor, and an advocate for medical research and…

A Short Biography of Paul A. M. Dirac and Historical Development of Dirac Delta Function

ERIC Educational Resources Information Center

Debnath, Lokenath

2013-01-01

This paper deals with a short biography of Paul Dirac, his first celebrated work on quantum mechanics, his first formal systematic use of the Dirac delta function and his famous work on quantum electrodynamics and quantum statistics. Included are his first discovery of the Dirac relativistic wave equation, existence of positron and the intrinsic…

33 CFR 207.320 - Mississippi River, Twin City Locks and Dam, St. Paul and Minneapolis, Minn.; pool level.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Mississippi River, Twin City... § 207.320 Mississippi River, Twin City Locks and Dam, St. Paul and Minneapolis, Minn.; pool level. In... the Twin City Locks and Dam, Minneapolis, in the interest of navigation, and supersedes rules and...

33 CFR 207.320 - Mississippi River, Twin City Locks and Dam, St. Paul and Minneapolis, Minn.; pool level.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Mississippi River, Twin City... § 207.320 Mississippi River, Twin City Locks and Dam, St. Paul and Minneapolis, Minn.; pool level. In... the Twin City Locks and Dam, Minneapolis, in the interest of navigation, and supersedes rules and...

Socrates, Augustine, and Paul Gauguin on the Reciprocity between Speech and Silence in Education

ERIC Educational Resources Information Center

Caranfa, Angelo

2013-01-01

While most educational practices today place an excessive amount of attention on discourse, this article attaches great importance to the reciprocity between speech and silence by drawing from the writings of Plato's Socrates, Augustine, and Paul Gauguin for whom this reciprocity is of the essence in learning. These three figures teach that…

April 2017 Marshall Association luncheon with Madison mayor Paul

NASA Image and Video Library

2017-03-03

Paul Finley, mayor of the City of Madison, Alabama, chats with Jody Singer, deputy director of NASA’s Marshall Space Flight Center, following the April 26 lunch meeting of the Marshall Association, the center's professional, employee service organization. Finley, the guest speaker for the event, served as mayor of Madison from 2008-2012 and was elected to the post again in 2016.

Change in the Minneapolis/St. Paul Metropolitan Area Oak Forests from 1991 to 1998

Treesearch

Kathleen Ward; Jennifer Juzwik

2005-01-01

Based on classifications of Landsat TM imagery, the total area of oak forests in the Minneapolis/St. Paul, Minnesota, metropolitan area decreased by 5.6 percent between 1991 and 1998, and oak forest losses ranged from 12 to 1,229 ha in six of seven ecological subsections. Maps and spatial data layers are provided.

Paul Broca and French Brains: Portraits from the Life of an Eminent Neuroscientist

ERIC Educational Resources Information Center

LaPointe, Leonard L.

2014-01-01

Pierre Paul Broca is one of the most legendary neuroscientists of the last few centuries. His name graces a region of the brain, and his work is richly associated with human communication and its disorders. This article traces the contributions of this man and the historical context of his remarkable discoveries. After approval to visit and access…

Affinity Probe Capillary Electrophoresis Evaluation of Aptamer Binding to Campylobacter jejuni Bacteria

DTIC Science & Technology

2009-11-01

absorption coefficients (260nm) of 173,100 M cm–1. Desired stock solutions were freshly prepared with tris- borate ethylenediaminetetraacetic acid (EDTA... McMasters , and Paul M. Pellegrino ARL-TR-5015 November 2009 Approved for public release...Aptamer Binding to Campylobacter jejuni Bacteria Dimitra N. Stratis-Cullum, Sun McMasters , and Paul M. Pellegrino Sensors and Electron Devices

"I Always Wanted to Be a Hero." Life without Parole

ERIC Educational Resources Information Center

Roth, Angela M.

2013-01-01

In this article, the author recalls her face-to-face meeting with a prison inmate. Paul Jensen is currently serving a life sentence without parole in South Dakota for a crime committed at age 14. In January 1996, Paul was involved in a robbery that went tragically wrong and resulted in the shooting death of taxi cab driver Michael Hare. Three…

Project Early Kindergarten Evaluation: Results through 2009-10 of a Saint Paul Public Schools Initiative

ERIC Educational Resources Information Center

Maxfield, Jennifer; Gozali-Lee, Edith; Mueller, Dan

2010-01-01

Project Early Kindergarten (PEK) aims to improve the school-readiness of Saint Paul children and help close the achievement gap through offering high-quality educational experiences for preschool children. This report comes at the conclusion of the sixth year of PEK. Following an initial planning year (2004-05), PEK has served children through the…

Tanadgusix Foundation Hydrogen / Plug In Electric Vehicle Project

DOE Office of Scientific and Technical Information (OSTI.GOV)

Miller, Martin

2013-09-27

TDX Foundation undertook this project in an effort to evaluate alternative transportation options and their application in the community of Saint Paul, Alaska an isolated island community in the Bering Sea. Both hydrogen and electric vehicle technology was evaluated for technical and economic feasibility. Hydrogen technology was found to be cost prohibitive. TDX demonstrated the implementation of various types of electric vehicles on St. Paul Island, including side-by-side all terrain vehicles, a Chevrolet Volt (sedan), and a Ford Transit Connect (small van). Results show that electric vehicles are a promising solution for transportation needs on St. Paul Island. Limited batterymore » range and high charging time requirements result in decreased usability, even on a small, isolated island. These limitations were minimized by the installation of enhanced charging stations for the car and van. In collaboration with the University of Alaska Fairbanks (UAF), TDX was able to identify suitable technologies and demonstrate their applicability in the rural Alaskan environment. TDX and UAF partnered to engage and educate the entire community of Saint Paul – fom school children to elders – through presentation of research, findings, demonstrations, first hand operation of alternative fuel vehicles.« less

A retrospective diagnosis of epilepsy in three historical figures: St Paul, Joan of Arc and Socrates.

PubMed

Muhammed, Louwai

2013-11-01

It has been suggested that undiagnosed epilepsy profoundly influenced the lives of several key figures in history. Historical sources recounting strange voices and visions may in fact have been describing manifestations of epileptic seizures rather than more supernatural phenomena. Well-documented accounts of such experiences exist for three individuals in particular: Socrates, St Paul and Joan of Arc. The great philosopher Socrates described a 'daimonion' that would visit him throughout his life. This daimonion may have represented recurrent simple partial seizures, while the peculiar periods of motionlessness for which Socrates was well known may have been the result of co-existing complex partial seizures. St Paul's religious conversion on the Road to Damascus may have followed a temporal lobe seizure which would account for the lights, voices, blindness and even the religious ecstasy he described. Finally, Joan of Arc gave a detailed narrative on the voices she heard from childhood during her Trial of Condemnation. Her auditory hallucinations appear to follow sudden acoustic stimuli in a way reminiscent of idiopathic partial epilepsy with auditory features. By analysing passages from historical texts, it is possible to argue that Socrates, St Paul and Joan of Arc each had epilepsy.

Ion-neutral-atom sympathetic cooling in a hybrid linear rf Paul and magneto-optical trap

NASA Astrophysics Data System (ADS)

Goodman, D. S.; Sivarajah, I.; Wells, J. E.; Narducci, F. A.; Smith, W. W.

2012-09-01

Long-range polarization forces between ions and neutral atoms result in large elastic scattering cross sections (e.g., ˜106a.u. for Na-Na+ or Na-Ca+ at cold and ultracold temperatures). This suggests that a hybrid ion-neutral trap should offer a general means for significant sympathetic cooling of atomic or molecular ions. We present simion 7.0 simulation results concerning the advantages and limitations of sympathetic cooling within a hybrid trap apparatus consisting of a linear rf Paul trap concentric with a Na magneto-optical trap (MOT). This paper explores the impact of various heating mechanisms on the hybrid system and how parameters related to the MOT, Paul trap, number of ions, and ion species affect the efficiency of the sympathetic cooling.

Interbody fusion cage design using integrated global layout and local microstructure topology optimization.

PubMed

Lin, Chia-Ying; Hsiao, Chun-Ching; Chen, Po-Quan; Hollister, Scott J

2004-08-15

An approach combining global layout and local microstructure topology optimization was used to create a new interbody fusion cage design that concurrently enhanced stability, biofactor delivery, and mechanical tissue stimulation for improved arthrodesis. To develop a new interbody fusion cage design by topology optimization with porous internal architecture. To compare the performance of this new design to conventional threaded cage designs regarding early stability and long-term stress shielding effects on ingrown bone. Conventional interbody cage designs mainly fall into categories of cylindrical or rectangular shell shapes. The designs contribute to rigid stability and maintain disc height for successful arthrodesis but may also suffer mechanically mediated failures of dislocation or subsidence, as well as the possibility of bone resorption. The new optimization approach created a cage having designed microstructure that achieved desired mechanical performance while providing interconnected channels for biofactor delivery. The topology optimization algorithm determines the material layout under desirable volume fraction (50%) and displacement constraints favorable to bone formation. A local microstructural topology optimization method was used to generate periodic microstructures for porous isotropic materials. Final topology was generated by the integration of the two-scaled structures according to segmented regions and the corresponding material density. Image-base finite element analysis was used to compare the mechanical performance of the topology-optimized cage and conventional threaded cage. The final design can be fabricated by a variety of Solid Free-Form systems directly from the image output. The new design exhibited a narrower, more uniform displacement range than the threaded cage design and lower stress at the cage-vertebra interface, suggesting a reduced risk of subsidence. Strain energy density analysis also indicated that a higher portion of total strain energy density was transferred into the new bone region inside the new designed cage, indicating a reduced risk of stress shielding. The new design approach using integrated topology optimization demonstrated comparable or better stability by limited displacement and reduced localized deformation related to the risk of subsidence. Less shielding of newly formed bone was predicted inside the new designed cage. Using the present approach, it is also possible to tailor cage design for specific materials, either titanium or polymer, that can attain the desired balance between stability, reduced stress shielding, and porosity for biofactor delivery.

Rheology and microstructure of filled polymer melts

NASA Astrophysics Data System (ADS)

Anderson, Benjamin John

The states of particle dispersion in polymer nanocomposite melts are studied through rheological characterization of nanocomposite melt mechanical properties and small angle X-ray scattering measurement of the particle microstructure. The particle microstructure probed with scattering is related to bulk flow mechanics to determine the origin of slow dynamics in these complex dispersions: whether a gel or glass transition or a slowing down of dispersing phase dynamics. These studies were conducted to understand polymer mediated particle-particle interactions and potential particle-polymer phase separation. The phase behavior of the dispersion will be governed by enthalpic and entropic contributions. A variety of phases are expected: homogeneous fluid, phase separated, or non-equilibrium gel. The effects of dispersion control parameters, namely particle volume fraction, polymer molecular weight, and polymer-particle surface affinity, on the phase behavior of 44 nm silica dispersions are studied in low molecular weight polyethylene oxide (PEO), polyethylene oxide dimethylether (PEODME), and polytetrahydrofuran (PTHF). Scattering measurements of the particle second virial coefficient in PEO melts indicates repulsive particles by a value slightly greater than unity. In PEO nanocomposites, dispersion dynamics slow down witnessed by a plateau in the elastic modulus as the particle separation approaches the length scale of the polymer radius of gyration. As the polymer molecular weight is increased, the transition shifts to lower particle volume fractions. Below polymer entanglement, the slow dynamics mimics that of a colloidal glass by the appearance of two relaxation times in the viscous modulus that display power law scaling with volume fraction. Above entanglement, the slow dynamics is qualitatively different resembling the behavior of a gelled suspension yet lacking any sign of scattering from particle agglomerates. As polymer molecular weight is increased at a fixed volume fraction, two strain yielding events emerge. Further particle loading leads to the formation of a particle-polymer network and the onset of brittle mechanical behavior. The performance of PEO nanocomposites is contrasted by PEODME and PTHF nanocomposites where a change in the polymer segment-surface activity changes the slow dynamics of the nanocomposite and the microstructure of particles in the melt. Slow dynamics and the particle microstructure indicate a gelled suspension as volume fraction is raised with particles in or near contact and support the turning on of particle attractions in the melt.

High-resolution nerve ultrasound and magnetic resonance neurography as complementary neuroimaging tools for chronic inflammatory demyelinating polyneuropathy

PubMed Central

Pitarokoili, Kalliopi; Kronlage, Moritz; Bäumer, Philip; Schwarz, Daniel; Gold, Ralf; Bendszus, Martin; Yoon, Min-Suk

2018-01-01

Background: We present a clinical, electrophysiological, sonographical and magnetic resonance neurography (MRN) study examining the complementary role of two neuroimaging methods of the peripheral nervous system for patients with chronic inflammatory demyelinating polyneuropathy (CIDP). Furthermore, we explore the significance of cross-sectional area (CSA) increase through correlations with MRN markers of nerve integrity. Methods: A total of 108 nerve segments on the median, ulnar, radial, tibial and fibular nerve, as well as the lumbar and cervical plexus of 18 CIDP patients were examined with high-resonance nerve ultrasound (HRUS) and MRN additionally to the nerve conduction studies. Results: We observed a fair degree of correlation of the CSA values for all nerves/nerve segments between the two methods, with a low random error in Bland–Altman analysis (bias = HRUS-CSA − MRN-CSA, −0.61 to −3.26 mm). CSA in HRUS correlated with the nerve T2-weighted (nT2) signal increase as well as with diffusion tensor imaging parameters such as fractional anisotropy, a marker of microstructural integrity. HRUS-CSA of the interscalene brachial plexus correlated significantly with the MRN-CSA and nT2 signal of the L5 and S1 roots of the lumbar plexus. Conclusions: HRUS allows for reliable CSA imaging of all peripheral nerves and the cervical plexus, and CSA correlates with markers of nerve integrity. Imaging of proximal segments as well as the estimation of nerve integrity require MRN as a complementary method. PMID:29552093

Diagnostic and Therapeutic Radiopharmaceutical Agents for Selective Discrimination of Prostate Cancer

DTIC Science & Technology

2009-10-01

Bottenus, Brienne N.∞; Fugate, Glenn A.†; Benny, Paul*. Actinides Separations, Conference Pacific Northwest National Lab 6/2006 In situ formation of...Bottenus, Brienne N.∞; Benny, Paul*. Actinides Separations, Conference Pacific Northwest National Lab 3/12/2006 S-functionalized cysteine ligands...cancer imaging. The successful preparation and radiolabeling of the first generation of compounds illustrates one the key critical objectives being

30. Photocopy of photograph of architectural rendering by office of ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

30. Photocopy of photograph of architectural rendering by office of Clarence H. Johnston, Sr., dated 1929; photograph in Clarence H. Johnston Papers, Northwest Architectural Archives, University of Minnesota; photographer unknown; location of rendering unknown; delineator unknown; THREE-QUARTER VIEW SHOWING WEST SIDE AND SOUTH FRONT; LOOKING NORTHEAST - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

Paul Ehrlich: pioneer of chemotherapy and cure by arsenic (1854-1915).

PubMed Central

Thorburn, A L

1983-01-01

Paul Ehrlich's experiments in staining techniques at the end of the nineteenth century resulted in many discoveries which help to form the basis of present research work. Ehrlich's chemotherapy research led to his formulating the arsenic compound, Salvarsan, which was used in the treatment of syphilis during the first half of this century until it was superseded by penicillin. Images PMID:6196079

Agent-based Approaches to Dynamic Team Simulation

DTIC Science & Technology

2008-09-01

Pittsburgh Reviewed by Paul Rosenfeld, Ph.D. Institute for Organizational Assessment Approved and released by David L. Alderton, Ph.D. Director...architects as artistic or of clerks as conventional. Steiner (1972) proposed a functional taxonomy recently adopted by Barrick, Stewart, Neubert ... Paul (1998) again found agreeableness to account for 8 percent of the variance in measures of fit to an organization. There appears to be better

Solution Techniques for Large Eigenvalue Problems in Structural Dynamics.

DTIC Science & Technology

1979-06-01

Pasadena, California 91109 Washington, D.C. 20553 Professor Paul M. Naghdi National Academy of Sciences University of California National Research...Engineering Washington, D.C. 20064 : S oProfessor Burt Paul University of Pennsylvania Dr. Samuel B. Batdorf Towns School of Civil and University of...Universities (Con’t) Dr. V. K. Varadan Professor V. H. Neubert Ohio State University Research Foundation Pennsylvania State University Department of

The First-Year Urban High School Teacher: Holding the Torch, Lighting the Fire

ERIC Educational Resources Information Center

Weinberg, Paul J.; Weinberg, Carl

2008-01-01

The book tracks co-author Paul Weinberg during his first year of teaching as he is introduced to the daily tribulations of an urban Los Angeles high school. Paul's father Carl Weinberg, who fifty years earlier himself began his career in education an urban secondary school teacher, shares his experiences side-by-side with those of his son.…

Paul Bunyan Takes A Wife--Developing Language, Reading, and Thinking Abilities through Creative Arts: An Alternative to Performance Centered Instruction.

ERIC Educational Resources Information Center

Ward, Pat; And Others

This guide, designed for the elementary level, contains written and oral language activities involving the five senses which are intended to help teachers develop enthusiastic readers. The guide's five sections are as follows: (1) My Very Own Paul Bunyan Songbook; (2) A Logger's Log; (3) Teacher's Instructions for the Magic Wall and Parachute…